[CodiMD] Make warning for old pads bigger

pica-codimd/entrypoint.sh

 #! /bin/sh
 
 sed "154a  | <a href=\"https://picasoft.net/co/cgu.html\">CGU</a> " -i /home/codimd/app/public/views/index/body.ejs
-sed "41a Cette instance ne garde le contenu que deux ans après la dernière modification !" -i /home/codimd/app/public/views/index/body.ejs
+sed "41a <span style=\"font-size:2em;font-weight:bold;\">Cette instance ne garde le contenu que deux ans après la dernière modification !</span>" -i /home/codimd/app/public/views/index/body.ejs
 /home/codimd/app/docker-entrypoint.sh &
 /home/codimd/app/supercronic /home/codimd/app/crontab