docs: Clarify wording around `...` in `language_servers` setting (#25782)

This PR clarifies the wording around how `...` is used in the
`language_servers` setting.

Closes https://github.com/zed-industries/zed/issues/25779.

Release Notes:

- N/A
b8387c6077Marshall Bowers committed on 2/27/2025, 10:27:40 PM· committed by GitHubparentc05ce88
1 file changedLine totals unavailable