doc: get rid of unnecessary eslint-skip comments

doc/api/crypto.md

@@ -42,7 +42,7 @@ calling `require('node:crypto')` will result in an error being thrown.
 
 When using CommonJS, the error thrown can be caught using try/catch:
 
-<!-- eslint-skip -->
+<!-- eslint-disable no-global-assign -->
 
 ```cjs
 let crypto;
@@ -53,6 +53,8 @@ try {
 }
 ```
 
+<!-- eslint-enable no-global-assign -->
+
 When using the lexical ESM `import` keyword, the error can only be
 caught if a handler for `process.on('uncaughtException')` is registered
 _before_ any attempt to load the module is made (using, for instance,

doc/api/errors.md

@@ -2938,9 +2938,7 @@ signal (such as [`subprocess.kill()`][]).
 [self-reference a package using its name][] and [define a custom subpath][] in
 the [`"exports"`][] field of the [`package.json`][] file.
 
-<!-- eslint-skip -->
-
-```js
+```mjs
 import './'; // unsupported
 import './index.js'; // supported
 import 'package-name'; // supported

doc/api/http.md

@@ -16,14 +16,12 @@ user is able to stream data.
 
 HTTP message headers are represented by an object like this:
 
-<!-- eslint-skip -->
-
-```js
-{ 'content-length': '123',
-  'content-type': 'text/plain',
-  'connection': 'keep-alive',
-  'host': 'example.com',
-  'accept': '*/*' }
+```json
+{ "content-length": "123",
+  "content-type": "text/plain",
+  "connection": "keep-alive",
+  "host": "example.com",
+  "accept": "*/*" }
 ```
 
 Keys are lowercased. Values are not modified.

doc/api/https.md

@@ -17,8 +17,6 @@ calling `require('node:https')` will result in an error being thrown.
 
 When using CommonJS, the error thrown can be caught using try/catch:
 
-<!-- eslint-skip -->
-
 ```cjs
 let https;
 try {

doc/api/querystring.md

@@ -87,12 +87,10 @@ collection of key and value pairs.
 
 For example, the query string `'foo=bar&abc=xyz&abc=123'` is parsed into:
 
-<!-- eslint-skip -->
-
-```js
+```json
 {
-  foo: 'bar',
-  abc: ['xyz', '123']
+  "foo": "bar",
+  "abc": ["xyz", "123"]
 }
 ```
 

doc/api/tls.md

@@ -22,8 +22,6 @@ calling `require('node:tls')` will result in an error being thrown.
 
 When using CommonJS, the error thrown can be caught using try/catch:
 
-<!-- eslint-skip -->
-
 ```cjs
 let tls;
 try {

doc/api/util.md

@@ -2513,9 +2513,7 @@ added: v10.0.0
 
 Returns `true` if the value is an instance of a [Module Namespace Object][].
 
-<!-- eslint-skip -->
-
-```js
+```mjs
 import * as ns from './a.js';
 
 util.types.isModuleNamespaceObject(ns);  // Returns true