fix typos in net/sched/* files

This patch fixes typos in net/sched/* files.

Signed-off-by: Taichi Nishimura <awkrail01@gmail.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
index 475fe22..cc49256 100644
--- a/net/sched/cls_flower.c
+++ b/net/sched/cls_flower.c
@@ -1057,7 +1057,7 @@ static void fl_set_key_pppoe(struct nlattr **tb,
 	 * because ETH_P_PPP_SES was stored in basic.n_proto
 	 * which might get overwritten by ppp_proto
 	 * or might be set to 0, the role of key_val::type
-	 * is simmilar to vlan_key::tpid
+	 * is similar to vlan_key::tpid
 	 */
 	key_val->type = htons(ETH_P_PPP_SES);
 	key_mask->type = cpu_to_be16(~0);