Fixing yaml [release]

Author: timheuer

.github/workflows/build.yaml

@@ -90,7 +90,7 @@ jobs:
             **/*.vsix
 
       - name: Publish extension to Marketplace
-        if: contains(github.event.head_commit.message, '[release]') }}
+        if: ${{ contains(github.event.head_commit.message, '[release]') }}
         uses: cezarypiatek/[email protected]
         with:
           extension-file: '${{ github.event.repository.name }}.vsix'