fix: create PR workflow syntax error

Author: diogomatsubara

.github/workflows/merge-release-branch.yml

@@ -73,7 +73,7 @@ jobs:
           pr_url=$(gh pr create \
           --title "chore: Merge release/${{ inputs.version }} into main" \
           --body "Open new development line" \
-          --head ${{ steps.compute-branch.outputs.branch }}
+          --head ${{ steps.compute-branch.outputs.branch }} \
           --base main \
           --label internal \
           -R ${{ matrix.repo }} \