[ImgBot] Optimize images

*Total -- 2,051.61kb -> 1,754.09kb (14.5%)

/images/links_movil.png -- 473.39kb -> 394.17kb (16.73%)
/images/links-pc.png -- 1,578.22kb -> 1,359.92kb (13.83%)

Signed-off-by: ImgBotApp <ImgBotHelp@gmail.com>

Author: ImgBotApp