Update release message

Author: chen08209

.github/workflows/build.yml

@@ -182,7 +182,7 @@ jobs:
           echo "Files copied successfully"
 
       - name: Push to fdroid repo
-        if: env.BRANCH_NAME == 'main'
+        if: env.BRANCH == 'main'
         uses: cpina/[email protected]
         env:
           SSH_DEPLOY_KEY: ${{ secrets.SSH_DEPLOY_KEY }}