fix(docs-guides): change 'master' to 'main' (#5346)

website/content/docs/nuxt.md

@@ -43,7 +43,7 @@ For your `static/admin/config.yml` file, you can put in a basic starter config:
 ```yaml
 backend:
   name: git-gateway
-  branch: master
+  branch: main # Branch to update (optional; defaults to master)
 
 media_folder: static/img
 public_folder: /img
@@ -94,7 +94,7 @@ It's now time to commit your changes and push to GitHub. `create-nuxt-app` initi
 git add .
 git commit -m "Initial Commit"
 git remote add origin https://github.com/YOUR_USERNAME/NEW_REPO_NAME.git
-git push -u origin master
+git push -u origin main
 ```
 
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