Fix helm-lint workflow name (#412)

Author: sd109

.github/workflows/test-pr.yaml

@@ -26,7 +26,7 @@ jobs:
 
   # Run the chart linting on every PR, even from external repos
   lint:
-    uses: ./.github/workflows/lint.yaml
+    uses: ./.github/workflows/helm-lint.yaml
     with:
       ref: ${{ github.event.pull_request.head.sha }}