Mael Rouxel-Labbé 0d66e19361 IO documentation fixes ...

See @sloriot's review:

https://cgal.geometryfactory.com/CGAL/Members/wiki/Features/Polgyon_soup_mesh_IO/2nd_round/Answer_to_review

(+ some commits before and after this one)

2020-07-24 17:06:00 +02:00

..

CGAL_ipelets

IO documentation fixes

2020-07-24 17:06:00 +02:00