chore: pr template formatting (#1359)

Author: antongolub

.github/PULL_REQUEST_TEMPLATE.md

@@ -8,8 +8,8 @@ import {$} from 'zx'
 
 ```
 
-- [ ] Tests pass. I've run `npm test` before submitting
-- [ ] Bundles updated. I've run `npm build` before committing
-- [ ] Appropriate changes to `docs` attached
-- [ ] Follows [Code of Conduct](https://github.com/google/zx?tab=coc-ov-file)
-- [ ] This PR is not a completely synthetic proposal generated by AI
+- [ ] **Build**: I’ve run `npm build` before committing and verified the bundle updates correctly.
+- [ ] **Tests**: I’ve `run test` and confirmed all tests succeed.
+- [ ] **Docs**: I’ve added or updated relevant documentation as needed.  
+- [ ] **CoC**: My changes follow [the project’s coding guidelines and Code of Conduct](https://github.com/google/zx?tab=coc-ov-file).  
+- [ ] **Review**: This PR represents original work and is not solely generated by AI tools.