fix: correct YAML syntax in cd.yml gh pr create command

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: JacobCoffee

.github/workflows/cd.yml

@@ -72,8 +72,7 @@ jobs:
               --title "docs: update changelog" \
               --body "Automated changelog update generated by git-cliff.
 
-          This PR updates the changelog with the latest commits.
-
+This PR updates the changelog with the latest commits." \
               --label "documentation" \
               --label "automated"
           fi