docs(contribute): update branch name (#5166)

* docs(contribute): update branch name

* use mdx

Author: chenxsan

src/content/contribute/release-process.md renamed to src/content/contribute/release-process.mdx

@@ -5,13 +5,14 @@ contributors:
   - d3viant0ne
   - sokra
   - byzyk
+  - chenxsan
 ---
 
 The release process for deploying webpack is actually quite painless. Read through the following steps, so you have a clear understanding of how it's done.
 
 ## Pull Requests
 
-When merging pull requests into the `master` branch, select the _Create Merge Commit_ option.
+When merging pull requests into the `main` branch, select the _Create Merge Commit_ option.
 
 ## Releasing