Multisites Rewrite URL problem

Hi,
I using wordpress multisites (self hosted)
This is the root link : http://equityprojets.com/minisites/
and the mini sites link is like : http://equityprojets.com/minisites/immigration/
the probleme is I wanna rwrite URL of mini sites to be like : http://equityprojets.com/immigration/
PS : without changing http://equityprojets.com/ because i\’m gonna use it like a portale website without wordpress (selfmade by laravel framwork)