message: docs: List macOS as also supporting XDG config directory
diff: @@ -570,7 +570,7 @@ By default, bottom will look at (based on [dirs](https://github.com/dirs-dev/dir
  | OS | Location |
  | ----------------------------------------------------------------------- | -------- |
  -| `~/.config/bottom/bottom.toml` or `$XDG_CONFIG_HOME/bottom/bottom.toml` | Linux |
  +| `~/.config/bottom/bottom.toml` or `$XDG_CONFIG_HOME/bottom/bottom.toml` | Linux/macOS |
  | `$HOME/Library/Application Support/bottom/bottom.toml` | macOS |
  | `C:\Users\<USER>\AppData\Roaming\bottom\bottom.toml` | Windows |
  