Update mirror-branch.yml for workflow_dispatch syntax

Author: tonystar

.github/workflows/mirror.yml .github/workflows/mirror-branch.yml.github/workflows/mirror.yml renamed to .github/workflows/mirror-branch.yml

@@ -2,7 +2,7 @@ name: Mirror Branch
 on:
   schedule:
     - cron: "0 0 * * *" # Runs every day at midnight
-  workflow_dispatch: # Allows manual trigger
+  workflow_dispatch: {} # Allows manual trigger
 
 jobs:
   mirror: