media: mc: mc-entity.c: Fix typo

s/entity in the other end/entity at the other end/

[hverkuil: also remove the spurious space after 'link']

Signed-off-by: Sebastian Fricke <sebastian.fricke@posteo.net>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>