Trivial: Clean up some typos.

Change-Id: I085615fde1f966490f30ed5d32017b8b088cfd59
Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
diff --git a/src/vnet/l2/l2_vtr.c b/src/vnet/l2/l2_vtr.c
index 02a6899..7096891 100644
--- a/src/vnet/l2/l2_vtr.c
+++ b/src/vnet/l2/l2_vtr.c
@@ -177,7 +177,7 @@
   vtr_tag1 = clib_net_to_host_u16 (vtr_tag1);
   vtr_tag2 = clib_net_to_host_u16 (vtr_tag2);
 
-  /* Determine number of vlan tags with explictly configured values */
+  /* Determine number of vlan tags with explicitly configured values */
   cfg_tags = 0;
   if (hw_no_tags || si->sub.eth.flags.no_tags)
     {