ci: add space to separate comment and job name

[cakebaker]

Fixes #10488

[github-actions]

GNU testsuite comparison:

Skipping an intermittent issue tests/shuf/shuf-reservoir (passes in this run but fails in the 'main' branch)
Skipping an intermittent issue tests/sort/sort-stale-thread-mem (passes in this run but fails in the 'main' branch)
Skipping an intermittent issue tests/tail/inotify-dir-recreate (passes in this run but fails in the 'main' branch)
Congrats! The gnu test tests/basenc/bounded-memory is now passing!

[oech3]

This job is a duplication (but building same crates 100+ times and cause no space left on device). So I think we should just remove this.

[ChrisDryden]

Whoops, looks like this was already fixed in another PR: #10600