docs: Fix path to keymap.json config file for macOS (#32728)

Update key-bindings doc page to correctly reference
`~/.config/zed/keymap.json` instead of the old `~/.zed/keymap.json`

Closes #ISSUE

Release Notes:

- N/A
d75e210e73Dallin Huff committed on 6/21/2025, 9:31:01 PM· committed by GitHubparent2b3e453
1 file changedLine totals unavailable