docs: update commitlint links in PR template

pull_request_template.md

@@ -4,6 +4,6 @@
 3. After bug fix/code change, ensure all the existing tests and new tests (if any) pass (`npm run-script test-all`). During development, to run individual test use `node_modules/nodeunit test/<test_file.js> -t <test_name>`.
 4. Build the driver (`npm run build`).
 5. Run eslint and flow typechecker (`npm run lint`).
-6. Run commitlint (`node_modules/.bin/commitlint --from origin/master --to HEAD`). Refer [commit conventions](http://marionebl.github.io/commitlint/#/concepts-commit-conventions) and [commit rules](http://marionebl.github.io/commitlint/#/reference-rules).
+6. Run commitlint (`node_modules/.bin/commitlint --from origin/master --to HEAD`). Refer [commit conventions](https://commitlint.js.org/#/concepts-commit-conventions) and [commit rules](https://commitlint.js.org/#/reference-rules).
 
 **Thank you for Contributing!**