fix array

.gitea/workflows/lint-test-helm.yaml

@@ -84,7 +84,7 @@ jobs:
 
             for path in $GIT_DIFF; do
               CHANGED_CHARTS+=$(echo "$path" | awk -F '/' '{print $4}')
-              RENDER_DIR+=$(echo " ")
+              CHANGED_CHARTS+=$(echo " ")
             done
 
           else