build: fix space

Author: tkajtoch

.github/workflows/release.yml

@@ -126,7 +126,7 @@ jobs:
       - name: Verify release commit is tagged
         run: |
           tag=$(git tag --points-at ${{ inputs.release_ref }})
-          if [[ "$?" -ne 0]] || [[ -z "$tag" ]]; then
+          if [[ "$?" -ne 0 ]] || [[ -z "$tag" ]]; then
             echo "::error:: Release ref does not point to any tag. Please tag the merge commit of the release PR and try again"
             exit 1
           else