message: Fix completion install instructions for Fish on macOS
diff: @@ -303,7 +303,7 @@ echo "source ~/.bash_completion/alacritty" >> ~/.bashrc
  To install the completions for fish, run
  ```
  -sudo cp alacritty-completions.fish /usr/share/fish/vendor_completions.d/alacritty.fish
  +sudo cp alacritty-completions.fish $__fish_datadir/vendor_completions.d/alacritty.fish
  ```
  ## Configuration
  