Don't block releases on docs

Linkcheck can fail during tag-triggered release runs because the new
release docs may not exist on RTD yet. The docs build/linkcheck still
runs and reports separately, but release no longer waits on that
timing-sensitive check.

Author: victorlin

.github/workflows/ci.yaml

@@ -364,7 +364,6 @@ jobs:
       - test-dist
       - test-standalone
       - lint
-      - doc
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6