clean up

docs/http/http-spans.md

@@ -63,17 +63,17 @@ and various HTTP versions like 1.1, 2 and SPDY.
 
 HTTP spans MUST follow the overall [guidelines for span names](https://github.com/open-telemetry/opentelemetry-specification/tree/v1.22.0/specification/trace/api.md#span).
 
-HTTP server span names SHOULD be `{method} {http.route}` (see below for the exact definition of the `{method}` placeholder) if there is a
-(low-cardinality) `http.route` available,
+HTTP server span names SHOULD be `{method} {http.route}` if there is a
+(low-cardinality) `http.route` available (see below for the exact definition of the [`{method}`](#method-placeholder) placeholder).
 
 If there is no (low-cardinality) `http.route` available, HTTP server span names
-SHOULD be `{method}` (see below for the exact definition of the `{method}` placeholder)
+SHOULD be [`{method}`](#method-placeholder).
 
 HTTP client spans have no `http.route` attribute since client-side instrumentation
 is not generally aware of the "route", and therefore HTTP client spans SHOULD be
-`{method}`.
+[`{method}`](#method-placeholder).
 
-The `{method}` MUST be `{http.request.method}` if the method represents the original method known to the instrumentation.
+The <span name="method-placeholder">`{method}`</span> MUST be `{http.request.method}` if the method represents the original method known to the instrumentation.
 In other cases (when `{http.request.method}` is set to `_OTHER`), `{method}` MUST be `HTTP`.
 
 Instrumentation MUST NOT default to using URI