cleanup github workflow

Author: alexintech

.github/workflows/plugin.yaml

@@ -45,8 +45,7 @@ jobs:
       - name: Upload artifacts to release
         uses: softprops/action-gh-release@c95fe1489396fe8a9eb87c0abf8aa5b2ef267fda # v2.2.1
         with:
-          files: |
-            dist/kubectl-ingress-nginx_*
+          files: dist/kubectl-ingress-nginx_*
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}