message: Fix docs about multiple simultaneous keybindings
diff: # a no-op if you do not wish to receive input characters for that binding.
  #
  # If the same trigger is assigned to multiple actions, all of them are executed
  -# at once.
  +# in the order they were defined in.
  #key_bindings:
  #- { key: Paste, action: Paste }
  #- { key: Copy, action: Copy }
  