Update Elixir docs (#12349)

This PR updates the Elixir docs with a note on how to switch to using
other language server.

Release Notes:

- N/A

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Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>
fcb4abf18bbarseek committed on 5/28/2024, 10:52:22 PM· committed by GitHubparentcd77e72
1 file changedLine totals unavailable