fix release workflow

.github/workflows/release.yml

@@ -35,7 +35,7 @@ jobs:
         git commit -am "Release v${{ env.RELEASE_VERSION }}"
         git tag -a v${{ env.RELEASE_VERSION }} -m "v${{ env.RELEASE_VERSION }}"
         git push --follow-tags origin $TMP_RELEASE_BRANCH
-        git push --delete origin ${{ env.TMP_RELEASE_BRANCH }}
+        git push --delete origin $TMP_RELEASE_BRANCH
 
     - name: Upload release notes
       uses: Roang-zero1/github-create-release-action@master