minor changes for v4

src/html/components/docs/how-to-contribute.mdx

@@ -14,7 +14,7 @@ Contributions are always **welcome and recommended**! Here is how for beginner's
     ```bash
     git clone https://github.com/YOUR_USERNAME/AdminLTE.git
     ```
-    * Create a new branch from `v4-dev`
+    * Create a new branch from `master`
 3. Compile dist files (Development) :
     * To compile the dist files you need Node.js 18 or higher/npm (node package manager)
     * `npm install` (install npm deps)
@@ -22,13 +22,13 @@ Contributions are always **welcome and recommended**! Here is how for beginner's
     * Make your changes only in `./src` Folder OR `package.json` in any files which are necessary for contribution
     * Do not make changes in `./dist/**` Because it contains compiled files and do not include in PR (Pull Request)
     * `npm run production` (compile css/js files and test all pages are perfectly working fine, before creating a pull request)
-4. Create a pull request to `v4-dev` branch
+4. Create a pull request to `master` branch
 
 ## Online one-click setup for contributing
 
 You can use [Codespace](https://docs.github.com/en/codespaces) an online IDE which is free for Open Source for working on issues or making PRs (Pull Requests). With a single click it will launch a workspace and automatically:
 
 - clone the `AdminLTE` repo.
-- Open with [Codespace](https://docs.github.com/en/codespaces)
+- Open with [Codespace](https://docs.github.com/en/codespaces) or [![Open in Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](https://gitpod.io/from-referrer/)
 - install the dependencies.
 - run `npm run dev` to start the server.