docs(clp-json): Update list of characters that requires escaping in queries.

docs/src/user-guide/reference-json-search-syntax.md

@@ -33,15 +33,18 @@ To search for a key or value with multiple words, you must quote the key/value w
 "multi-word key": "multi-word value"
 ```
 
-Queries for keys or values with the following literal characters must escape the characters using a
-`\` (backslash): `\`, `(`, `)`, `:`, `<`, `>`, `"`, `*`, `{`, `}`.
-
 :::{caution}
 Currently, a query that contains spaces is interpreted as a substring search, i.e., it will match
 log events that contain the value as a *substring*. In a future version of CLP, these queries will
 be interpreted as _exact_ searches unless they include [wildcards](#wildcards-in-values).
 :::
 
+:::{note}
+Certain characters have special meanings when used in keys or values, so to search for the
+characters literally, you must escape them. For a list of such characters, see
+[Escaping special characters](#escaping-special-characters).
+:::
+
 ### Querying nested kv-pairs
 
 If the kv-pair is nested in one or more objects, you can specify the key in one of two ways:
@@ -161,6 +164,33 @@ There are three supported boolean operators:
 
 You can use parentheses (`()`) to apply an operator to a group of expressions.
 
+### Escaping special characters
+
+Keys containing the following literal characters must escape the characters using a `\` (backslash):
+
+* `\`
+* `"`
+* `.`
+
+Values containing the following literal characters must escape the characters using a `\`
+(backslash):
+
+* `\`
+* `"`
+* `?`
+* `*`
+
+_Unquoted_ keys or values containing the following literal characters must also escape the
+characters using a `\` (backslash):
+
+* `(`
+* `)`
+* `:`
+* `<`
+* `>`
+* `{`
+* `}`
+
 ## Examples
 
 **Search for log events that contain a specific key-value pair:**