Correct the branch version number

Author: popduke

.asf.yaml

@@ -40,7 +40,7 @@ github:
         dismiss_stale_reviews: false
         required_approving_review_count: 1
       required_linear_history: true
-    release-v4.1: {}
+    release-v4.0: {} # release branch for 4.0.x
   features:
     issues: true
     projects: true