docs: Add missing `base_keymap` option in `configuring-zed.md` (#18190)

Added `base_keymap`, an option that works in the editor but is missing
from the documentation.

Release Notes:

- N/A

Junseong Park committed 1y ago

37c93d8fead2f33ed444c1ee8efd303a2b5a4c8c

Parent: e7fcf83

Committed by GitHub <noreply@github.com> on 9/22/2024, 9:09:35 AM