Fix goreleaser tag detection (#304)

Author: eseliger

.github/workflows/goreleaser.yml

@@ -8,7 +8,7 @@ on:
 jobs:
   goreleaser:
     runs-on: ubuntu-latest
-    if: startsWith(github.ref, 'refs/tags/v')
+    if: startsWith(github.ref, 'refs/tags/')
     steps:
       - name: Checkout
         uses: actions/checkout@v2