cleanup(.github/workflows): Typo in comments (denoland#11868)

.github/workflows/ci.yml

@@ -38,7 +38,7 @@ jobs:
  # stay mostly up-to-date in situations where a single job fails due to
  # e.g. a flaky test.
  # Don't fast-fail on tag build because publishing binaries shouldn't be
- # prevented if if any of the stages fails (which can be a false negative).
+ # prevented if any of the stages fail (which can be a false negative).
  fail-fast: ${{ github.event_name == 'pull_request' ||
  (github.ref != 'refs/heads/main' &&
  !startsWith(github.ref, 'refs/tags/')) }}