net: fix some typos in comment

In commit 371121057607e3127e19b3fa094330181b5b031e("net:
QDISC_STATE_RUNNING dont need atomic bit ops") the
__QDISC_STATE_RUNNING is renamed to __QDISC___STATE_RUNNING,
but the old names existing in comment are not replaced with
the new name completely.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/dev.c b/net/core/dev.c
index a04b12f..de97741 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2738,8 +2738,8 @@
 	/*
 	 * Heuristic to force contended enqueues to serialize on a
 	 * separate lock before trying to get qdisc main lock.
-	 * This permits __QDISC_STATE_RUNNING owner to get the lock more often
-	 * and dequeue packets faster.
+	 * This permits __QDISC___STATE_RUNNING owner to get the lock more
+	 * often and dequeue packets faster.
 	 */
 	contended = qdisc_is_running(q);
 	if (unlikely(contended))