README default `--ignore-watch` list appears to be missing `.nyc_output`

[NickitaChe]

Hi! While testing docs-drift on this repo, I noticed a small README/source mismatch around the watch ignore defaults.

README currently says:

By default,--ignore-watch flag is set to ignore `node_modules build dist .git bower_components logs .swp' files.

But the current source defines:

• DEFAULT_IGNORE = 'node_modules build dist .git bower_components logs .swp .nyc_output'

So the documented default list seems to be missing .nyc_output.

If that source constant is the intended source of truth, a small README update should be enough.

Found during external rollout testing of docs-drift.