tipc:subscr.c: fix a spelling mistake

Fix a spelling mistake.
Signed-off-by: gushengxian <gushengxian@yulong.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/tipc/subscr.c

@@ -66,7 +66,7 @@ static void tipc_sub_send_event(struct tipc_subscription *sub,
 /**
  * tipc_sub_check_overlap - test for subscription overlap with the given values
  * @subscribed: the service range subscribed for
- * @found: the service range we are checning for match
+ * @found: the service range we are checking for match
  *
  * Returns true if there is overlap, otherwise false.
  */