Docs: add toc in readme

Author: aladdin-add

README.md

@@ -2,7 +2,19 @@
 
 An ESLint plugin for linting ESLint plugins. Rules written in CJS, ESM, and TypeScript are all supported.
 
-## Installation
+<!-- vscode-markdown-toc -->
+* [Installation](#Installation)
+* [Usage](#Usage)
+* [Supported Rules](#SupportedRules)
+* [Supported Presets](#SupportedPresets)
+
+<!-- vscode-markdown-toc-config
+	numbering=false
+	autoSave=true
+	/vscode-markdown-toc-config -->
+<!-- /vscode-markdown-toc -->s
+
+## <a name='Installation'></a>Installation
 
 You'll first need to install [ESLint](https://eslint.org):
 
@@ -16,7 +28,7 @@ Next, install `eslint-plugin-eslint-plugin`:
 npm install eslint-plugin-eslint-plugin --save-dev
 ```
 
-## Usage
+## <a name='Usage'></a>Usage
 
 Add `eslint-plugin` to the plugins section of your `.eslintrc` configuration file. You can omit the `eslint-plugin-` prefix:
 
@@ -38,7 +50,7 @@ Then configure the rules you want to use under the rules section.
 }
 ```
 
-## Supported Rules
+## <a name='SupportedRules'></a>Supported Rules
 
 * ✔️ if the rule belongs to the `recommended` configuration
 * 🛠 if some problems reported by the rule are automatically fixable by the `--fix` [command line](https://eslint.org/docs/user-guide/command-line-interface#fixing-problems) option
@@ -73,7 +85,7 @@ Name | ✔️ | 🛠 | 💡 | Description
 [test-case-shorthand-strings](https://github.com/not-an-aardvark/eslint-plugin-eslint-plugin/blob/master/docs/rules/test-case-shorthand-strings.md) |  | 🛠 |  | enforce consistent usage of shorthand strings for test cases with no options
 <!-- __END AUTOGENERATED TABLE__ -->
 
-## Supported Presets
+## <a name='SupportedPresets'></a>Supported Presets
 
 |   | Name | Description |
 |:--|:-----|:------------|