doc: remove optional title prefixes

PR-URL: #60087
Refs: nodejs/doc-kit#378
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>

Author: avivkeller

doc/api/buffer.md

@@ -1494,7 +1494,7 @@ console.log(Buffer.isEncoding(''));
 // Prints: false
 ```
 
-### Class property: `Buffer.poolSize`
+### `Buffer.poolSize`
 
 <!-- YAML
 added: v0.11.3
@@ -5515,7 +5515,7 @@ introducing security vulnerabilities into an application.
 [`Buffer.from(arrayBuf)`]: #static-method-bufferfromarraybuffer-byteoffset-length
 [`Buffer.from(buffer)`]: #static-method-bufferfrombuffer
 [`Buffer.from(string)`]: #static-method-bufferfromstring-encoding
-[`Buffer.poolSize`]: #class-property-bufferpoolsize
+[`Buffer.poolSize`]: #bufferpoolsize
 [`ERR_INVALID_BUFFER_SIZE`]: errors.md#err_invalid_buffer_size
 [`ERR_OUT_OF_RANGE`]: errors.md#err_out_of_range
 [`JSON.stringify()`]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify

doc/api/util.md

@@ -1651,7 +1651,7 @@ A MIME string is a structured string containing multiple meaningful
 components. When parsed, a `MIMEType` object is returned containing
 properties for each of these components.
 
-### Constructor: `new MIMEType(input)`
+### `new MIMEType(input)`
 
 * `input` {string} The input MIME to parse
 
@@ -1843,7 +1843,7 @@ added:
 The `MIMEParams` API provides read and write access to the parameters of a
 `MIMEType`.
 
-### Constructor: `new MIMEParams()`
+### `new MIMEParams()`
 
 Creates a new `MIMEParams` object by with empty parameters