fix(cms): branch settings

Author: lukeocodes

static/admin/config.yml

@@ -4,7 +4,7 @@ logo_url: https://nuxt-starter-netlify-cms.netlify.app/icon.png
 publish_mode: editorial_workflow
 backend:
   name: git-gateway
-  branch: master
+  branch: main
 
 media_folder: static/img
 public_folder: /img