Feature/fix citest multidom distrib

[laetitia-m]

The ci test multidom_wave-8-distrib_parRidge was failing. This PR fixes this.

1. The variable parmesh->info.fem is now initialized using parmesh->listgrp[0].mesh->info.setfem instead of parmesh->listgrp[0].mesh->info.fem.
2. Fix a typo.

[Algiane]

Thanks for this fix.

To complete it and improve the code readibility, I will rename the fem field of ParMmg as setfem (so it will be consistent with the variable name in Mmg).