doc: Remove incorrect docmentation
doc: Remove incorrect docmentation

The documentation was about wl_client_get_object(), not about
wl_resource_get_client().

Signed-off-by: Jonas Ådahl <67dcd8a17e758192e0cbb577ce1d62cc7da6cf49@gmail.com>

tulcod/wayland,bitfactor/wayland,abooij/wayland,tulcod/wayland,sir-murray/wayland,bitfactor/wayland,sir-murray/wayland,eyolfson/wayland,sir-murray/wayland,bitfactor/wayland,eyolfson/wayland,abooij/wayland,mchalupa/wayland,tulcod/wayland,mchalupa/wayland,abooij/wayland,eyolfson/wayland,mchalupa/wayland