Mention how to disable key binding with noop command

[koorgoo]

It will be useful to mention how to disable disturbing key bindings.

Example:
To disable toggle_overwrite on macOS add { "keys": ["super+alt+o"], "command": "noop" } in your key map.

It must be in the section Key Bindings.

[FichteFoll]

Technically the "noop" command just doesn't exist, but iirc you can't bind empty commands either, so this is probably your best bet.

It will probably be added but with more context to explain why.