Update tutorials/cicd-github-action-object-storage-sync/index.mdx

Co-authored-by: SamyOubouaziz <[email protected]>

Author: LLejoly

tutorials/cicd-github-action-object-storage-sync/index.mdx

@@ -39,7 +39,7 @@ name: Upload to Scaleway Object Storage
 on:
   push:
     branches:
-      - main  # Change this to your default branch if different
+      - main  # Change this to your default branch if different (e.g. "trunk", or "master")
 
 jobs:
   upload: