Change the manual page title to use the device family name (Rhine),
since the list of supported device id's won't fit on one line anymore.
Submitted by: Lukas Ertl <l.ertl@univie.ac.at> (based on) [1]
PR: docs/55639 (based on) [1]
Confirmed by: driver source code [1]
MFC after: 3 days