message: doc: add a link to default keybindings
diff: @@ -88,7 +88,7 @@ This will allow you to simplify the above snippet as follows:
  }
  ```
  -
  +A list of default key bindings is available [here](https://github.com/microsoft/terminal/blob/master/src/cascadia/TerminalApp/defaults.json#L204).
  ### Unbinding keys
  @@ -160,7 +160,7 @@ Example settings include
  The profile GUID is used to reference the default profile in the global settings.
  -The values for background image stretch mode are documented [here](https://docs.microsoft.com/en-us/uwp/api/windows.ui.xaml.media.stretch)
  +The values for background image stretch mode are documented [here](https://docs.microsoft.com/en-us/uwp/api/windows.ui.xaml.media.stretch).
  ### Hiding a profile
  