media: media-entity.h: Fix documentation for media_create_intf_link

The documentation comment was inserted between the return type
and the function name. Reunite the lines.

Signed-off-by: Ian Jamison <ian.dev@arkver.com>
Fixes: db7ee32a ("[media] media-device.h: Improve documentation and update it")
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>