Fix formatting in linux.md (#26598)

Merge queue did not require docs tests to pass:
-
https://github.com/zed-industries/zed/actions/runs/13820880465/job/38665664419

This will be fixed with:
- https://github.com/zed-industries/zed/pull/26551

cc: @ConradIrwin 

Release Notes:

- N/A
009b90291ePeter Tripp committed on 3/12/2025, 8:33:11 PM· committed by GitHubparent8b17dc6
1 file changedLine totals unavailable