message: Update manual install instructions for Void Linux
diff: @@ -126,7 +126,7 @@ On [Void Linux](https://voidlinux.eu), install following packages before
  compiling Alacritty:
  ```sh
  -xbps-install cmake freetype-devel freetype expat-devel fontconfig-devel fontconfig
  +xbps-install cmake freetype-devel expat-devel fontconfig-devel libxcb-devel pkg-config python3
  ```
  #### FreeBSD
  