chore: upgrade the upgrade-examples skill (#1727)

Author: georgeh0

.claude/skills/upgrade-examples/SKILL.md

@@ -47,4 +47,10 @@ git commit -m "chore: upgrade examples deps to cocoindex-VERSION"
 git push -u origin ex-dep-VERSION
 ```
 
-5. Report the number of files updated and provide the branch name for creating a PR.
+5. Create a PR using the `gh` CLI and capture the PR URL from its output:
+
+```bash
+gh pr create --base v1 --title "chore: upgrade examples deps to cocoindex-VERSION" --body ""
+```
+
+6. Report the number of files updated and provide the PR link from the `gh pr create` output to the user.