qi::path: fix deprecation note for setWritablePath()
qi::path: fix deprecation note for setWritablePath()

Change-Id: Ic32dba95795ec211a9cea690270e47535f8b720f
Reviewed-on: http://gerrit.aldebaran.lan/50464
Reviewed-by: ncornu <13ba26b8f12d26c819f48749c65f2f7f5c1d13db@aldebaran-robotics.com>
Reviewed-by: hcuche <2a0975cc082cedff4d4350e3f6ec187146151bc6@aldebaran-robotics.com>
Tested-by: hcuche <2a0975cc082cedff4d4350e3f6ec187146151bc6@aldebaran-robotics.com>

aldebaran/libqi,bsautron/libqi,aldebaran/libqi,vbarbaresi/libqi,aldebaran/libqi