doc,perf_hooks: use code markup/markdown in headers

PR-URL: #31086
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

doc/api/perf_hooks.md

@@ -25,12 +25,12 @@ doSomeLongRunningProcess(() => {
 });
 ```
 
-## Class: Performance
+## Class: `Performance`
 <!-- YAML
 added: v8.5.0
 -->
 
-### performance.clearMarks(\[name\])
+### `performance.clearMarks([name])`
 <!-- YAML
 added: v8.5.0
 -->
@@ -40,7 +40,7 @@ added: v8.5.0
 If `name` is not provided, removes all `PerformanceMark` objects from the
 Performance Timeline. If `name` is provided, removes only the named mark.
 
-### performance.mark(\[name\])
+### `performance.mark([name])`
 <!-- YAML
 added: v8.5.0
 -->
@@ -53,7 +53,7 @@ Creates a new `PerformanceMark` entry in the Performance Timeline. A
 `performanceEntry.duration` is always `0`. Performance marks are used
 to mark specific significant moments in the Performance Timeline.
 
-### performance.measure(name, startMark, endMark)
+### `performance.measure(name, startMark, endMark)`
 <!-- YAML
 added: v8.5.0
 -->
@@ -78,7 +78,7 @@ Performance Timeline or any of the timestamp properties provided by the
 `PerformanceNodeTiming` class. If the named `endMark` does not exist, an
 error will be thrown.
 
-### performance.nodeTiming
+### `performance.nodeTiming`
 <!-- YAML
 added: v8.5.0
 -->
@@ -88,7 +88,7 @@ added: v8.5.0
 An instance of the `PerformanceNodeTiming` class that provides performance
 metrics for specific Node.js operational milestones.
 
-### performance.now()
+### `performance.now()`
 <!-- YAML
 added: v8.5.0
 -->
@@ -98,7 +98,7 @@ added: v8.5.0
 Returns the current high resolution millisecond timestamp, where 0 represents
 the start of the current `node` process.
 
-### performance.timeOrigin
+### `performance.timeOrigin`
 <!-- YAML
 added: v8.5.0
 -->
@@ -108,7 +108,7 @@ added: v8.5.0
 The [`timeOrigin`][] specifies the high resolution millisecond timestamp at
 which the current `node` process began, measured in Unix time.
 
-### performance.timerify(fn)
+### `performance.timerify(fn)`
 <!-- YAML
 added: v8.5.0
 -->
@@ -141,12 +141,12 @@ obs.observe({ entryTypes: ['function'] });
 wrapped();
 ```
 
-## Class: PerformanceEntry
+## Class: `PerformanceEntry`
 <!-- YAML
 added: v8.5.0
 -->
 
-### performanceEntry.duration
+### `performanceEntry.duration`
 <!-- YAML
 added: v8.5.0
 -->
@@ -156,7 +156,7 @@ added: v8.5.0
 The total number of milliseconds elapsed for this entry. This value will not
 be meaningful for all Performance Entry types.
 
-### performanceEntry.name
+### `performanceEntry.name`
 <!-- YAML
 added: v8.5.0
 -->
@@ -165,7 +165,7 @@ added: v8.5.0
 
 The name of the performance entry.
 
-### performanceEntry.startTime
+### `performanceEntry.startTime`
 <!-- YAML
 added: v8.5.0
 -->
@@ -175,7 +175,7 @@ added: v8.5.0
 The high resolution millisecond timestamp marking the starting time of the
 Performance Entry.
 
-### performanceEntry.entryType
+### `performanceEntry.entryType`
 <!-- YAML
 added: v8.5.0
 -->
@@ -185,7 +185,7 @@ added: v8.5.0
 The type of the performance entry. Currently it may be one of: `'node'`,
 `'mark'`, `'measure'`, `'gc'`, `'function'`, `'http2'` or `'http'`.
 
-### performanceEntry.kind
+### `performanceEntry.kind`
 <!-- YAML
 added: v8.5.0
 -->
@@ -201,14 +201,14 @@ The value may be one of:
 * `perf_hooks.constants.NODE_PERFORMANCE_GC_INCREMENTAL`
 * `perf_hooks.constants.NODE_PERFORMANCE_GC_WEAKCB`
 
-## Class: PerformanceNodeTiming extends PerformanceEntry
+## Class: `PerformanceNodeTiming extends PerformanceEntry`
 <!-- YAML
 added: v8.5.0
 -->
 
 Provides timing details for Node.js itself.
 
-### performanceNodeTiming.bootstrapComplete
+### `performanceNodeTiming.bootstrapComplete`
 <!-- YAML
 added: v8.5.0
 -->
@@ -219,7 +219,7 @@ The high resolution millisecond timestamp at which the Node.js process
 completed bootstrapping. If bootstrapping has not yet finished, the property
 has the value of -1.
 
-### performanceNodeTiming.environment
+### `performanceNodeTiming.environment`
 <!-- YAML
 added: v8.5.0
 -->
@@ -229,7 +229,7 @@ added: v8.5.0
 The high resolution millisecond timestamp at which the Node.js environment was
 initialized.
 
-### performanceNodeTiming.loopExit
+### `performanceNodeTiming.loopExit`
 <!-- YAML
 added: v8.5.0
 -->
@@ -240,7 +240,7 @@ The high resolution millisecond timestamp at which the Node.js event loop
 exited. If the event loop has not yet exited, the property has the value of -1.
 It can only have a value of not -1 in a handler of the [`'exit'`][] event.
 
-### performanceNodeTiming.loopStart
+### `performanceNodeTiming.loopStart`
 <!-- YAML
 added: v8.5.0
 -->
@@ -251,7 +251,7 @@ The high resolution millisecond timestamp at which the Node.js event loop
 started. If the event loop has not yet started (e.g., in the first tick of the
 main script), the property has the value of -1.
 
-### performanceNodeTiming.nodeStart
+### `performanceNodeTiming.nodeStart`
 <!-- YAML
 added: v8.5.0
 -->
@@ -261,7 +261,7 @@ added: v8.5.0
 The high resolution millisecond timestamp at which the Node.js process was
 initialized.
 
-### performanceNodeTiming.v8Start
+### `performanceNodeTiming.v8Start`
 <!-- YAML
 added: v8.5.0
 -->
@@ -271,9 +271,9 @@ added: v8.5.0
 The high resolution millisecond timestamp at which the V8 platform was
 initialized.
 
-## Class: PerformanceObserver
+## Class: `PerformanceObserver`
 
-### new PerformanceObserver(callback)
+### `new PerformanceObserver(callback)`
 <!-- YAML
 added: v8.5.0
 -->
@@ -310,13 +310,13 @@ notified about new `PerformanceEntry` instances. The callback receives a
 `PerformanceObserverEntryList` instance and a reference to the
 `PerformanceObserver`.
 
-### performanceObserver.disconnect()
+### `performanceObserver.disconnect()`
 <!-- YAML
 added: v8.5.0
 -->
 Disconnects the `PerformanceObserver` instance from all notifications.
 
-### performanceObserver.observe(options)
+### `performanceObserver.observe(options)`
 <!-- YAML
 added: v8.5.0
 -->
@@ -366,15 +366,15 @@ for (let n = 0; n < 3; n++)
   performance.mark(`test${n}`);
 ```
 
-## Class: PerformanceObserverEntryList
+## Class: `PerformanceObserverEntryList`
 <!-- YAML
 added: v8.5.0
 -->
 
 The `PerformanceObserverEntryList` class is used to provide access to the
 `PerformanceEntry` instances passed to a `PerformanceObserver`.
 
-### performanceObserverEntryList.getEntries()
+### `performanceObserverEntryList.getEntries()`
 <!-- YAML
 added: v8.5.0
 -->
@@ -384,7 +384,7 @@ added: v8.5.0
 Returns a list of `PerformanceEntry` objects in chronological order
 with respect to `performanceEntry.startTime`.
 
-### performanceObserverEntryList.getEntriesByName(name\[, type\])
+### `performanceObserverEntryList.getEntriesByName(name[, type])`
 <!-- YAML
 added: v8.5.0
 -->
@@ -398,7 +398,7 @@ with respect to `performanceEntry.startTime` whose `performanceEntry.name` is
 equal to `name`, and optionally, whose `performanceEntry.entryType` is equal to
 `type`.
 
-### performanceObserverEntryList.getEntriesByType(type)
+### `performanceObserverEntryList.getEntriesByType(type)`
 <!-- YAML
 added: v8.5.0
 -->
@@ -410,7 +410,7 @@ Returns a list of `PerformanceEntry` objects in chronological order
 with respect to `performanceEntry.startTime` whose `performanceEntry.entryType`
 is equal to `type`.
 
-## perf_hooks.monitorEventLoopDelay(\[options\])
+## `perf_hooks.monitorEventLoopDelay([options])`
 <!-- YAML
 added: v11.10.0
 -->
@@ -444,13 +444,13 @@ console.log(h.percentile(50));
 console.log(h.percentile(99));
 ```
 
-### Class: Histogram
+### Class: `Histogram`
 <!-- YAML
 added: v11.10.0
 -->
 Tracks the event loop delay at a given sampling rate.
 
-#### histogram.disable()
+#### `histogram.disable()`
 <!-- YAML
 added: v11.10.0
 -->
@@ -460,7 +460,7 @@ added: v11.10.0
 Disables the event loop delay sample timer. Returns `true` if the timer was
 stopped, `false` if it was already stopped.
 
-#### histogram.enable()
+#### `histogram.enable()`
 <!-- YAML
 added: v11.10.0
 -->
@@ -470,7 +470,7 @@ added: v11.10.0
 Enables the event loop delay sample timer. Returns `true` if the timer was
 started, `false` if it was already started.
 
-#### histogram.exceeds
+#### `histogram.exceeds`
 <!-- YAML
 added: v11.10.0
 -->
@@ -480,7 +480,7 @@ added: v11.10.0
 The number of times the event loop delay exceeded the maximum 1 hour event
 loop delay threshold.
 
-#### histogram.max
+#### `histogram.max`
 <!-- YAML
 added: v11.10.0
 -->
@@ -489,7 +489,7 @@ added: v11.10.0
 
 The maximum recorded event loop delay.
 
-#### histogram.mean
+#### `histogram.mean`
 <!-- YAML
 added: v11.10.0
 -->
@@ -498,7 +498,7 @@ added: v11.10.0
 
 The mean of the recorded event loop delays.
 
-#### histogram.min
+#### `histogram.min`
 <!-- YAML
 added: v11.10.0
 -->
@@ -507,7 +507,7 @@ added: v11.10.0
 
 The minimum recorded event loop delay.
 
-#### histogram.percentile(percentile)
+#### `histogram.percentile(percentile)`
 <!-- YAML
 added: v11.10.0
 -->
@@ -517,7 +517,7 @@ added: v11.10.0
 
 Returns the value at the given percentile.
 
-#### histogram.percentiles
+#### `histogram.percentiles`
 <!-- YAML
 added: v11.10.0
 -->
@@ -526,14 +526,14 @@ added: v11.10.0
 
 Returns a `Map` object detailing the accumulated percentile distribution.
 
-#### histogram.reset()
+#### `histogram.reset()`
 <!-- YAML
 added: v11.10.0
 -->
 
 Resets the collected histogram data.
 
-#### histogram.stddev
+#### `histogram.stddev`
 <!-- YAML
 added: v11.10.0
 -->