message: Fix json settings documentation
  * Fix json settings documentation
  The ctrl+c issue was fixed in [#2446](https://github.com/microsoft/terminal/pull/2446)
  * Update UsingJsonSettings.md
diff: @@ -171,5 +171,5 @@ You can even set multiple keybindings for a single action if you'd like. For exa
  will bind both <kbd>ctrl+shift+v</kbd> and
  <kbd>shift+Insert</kbd> to `paste`.
  -Note: If you set your copy keybinding to `"ctrl+c"`, you won't be able to send an interrupt to the commandline application using <kbd>Ctrl+C</kbd>. This is a bug, and being tracked by [#2258](https://github.com/microsoft/terminal/issues/2285).
  +Note: If you set your copy keybinding to `"ctrl+c"`, you'll only be able to send an interrupt to the commandline application using <kbd>Ctrl+C</kbd> when there's no text selection.
  Additionally, if you set `paste` to `"ctrl+v"`, commandline applications won't be able to read a ctrl+v from the input. For these reasons, we suggest `"ctrl+shift+c"` and `"ctrl+shift+v"`
  