Update README.md

Author: driesvints

README.md

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 While Laravel does not dictate which JavaScript or CSS pre-processors you use, it does provide a basic starting point using [Bootstrap](https://getbootstrap.com/), [React](https://reactjs.org/), and / or [Vue](https://vuejs.org/) that will be helpful for many applications. By default, Laravel uses [NPM](https://www.npmjs.org/) to install both of these frontend packages.
 
-- [Official Documentation](#official-documentation)
-    - [Supported Versions](#supported-versions)
-    - [Installation](#installation)
-        - [CSS](#css)
-        - [JavaScript](#javascript)
-    - [Writing CSS](#writing-css)
-    - [Writing JavaScript](#writing-javascript)
-        - [Writing Vue Components](#writing-vue-components)
-        - [Using React](#using-react)
-    - [Adding Presets](#adding-presets)
-- [Contributing](#contributing)
-- [Code of Conduct](#code-of-conduct)
-- [Security Vulnerabilities](#security-vulnerabilities)
-- [License](#license)
-
 ## Official Documentation
 
 ### Supported Versions