fix(docs): fix broken link

Author: strager

docs/CHANGELOG.md

@@ -844,4 +844,5 @@ Beta release.
 [E0345]: https://quick-lint-js.com/errors/E0345/
 [E0347]: https://quick-lint-js.com/errors/E0347/
 [E0348]: https://quick-lint-js.com/errors/E0348/
+[E0349]: https://quick-lint-js.com/errors/E0349/
 [E0707]: https://quick-lint-js.com/errors/E0707/