can: af_can: can_rcv_list_find(): fix kernel doc after variable renaming

This patch fixes the kernel doc for can_rcv_list_find() which was broken in commit:

    3ee6d2be ("can: af_can: rename find_rcv_list() to can_rcv_list_find()")

while renaming a variable, but forgetting to rename the kernel doc, too.

Link: http://lore.kernel.org/r/20201006203748.1750156-2-mkl@pengutronix.de
Fixes: 3ee6d2be

 ("can: af_can: rename find_rcv_list() to can_rcv_list_find()")
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>