Typos.  A bunch of typos I've been collecting.

Change-Id: I53ab8d17914e6563110354e4052109ac02bf8f3b
Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
diff --git a/src/vnet/dhcp/dhcp6_pd_client_dp.c b/src/vnet/dhcp/dhcp6_pd_client_dp.c
index 9fb6096..bc6baf7 100644
--- a/src/vnet/dhcp/dhcp6_pd_client_dp.c
+++ b/src/vnet/dhcp/dhcp6_pd_client_dp.c
@@ -501,7 +501,7 @@
 dhcp6_pd_reply_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
 			vlib_frame_t * f)
 {
-  /* These cross the longjmp  boundry (vlib_process_wait_for_event)
+  /* These cross the longjmp  boundary (vlib_process_wait_for_event)
    * and need to be volatile - to prevent them from being optimized into
    * a register - which could change during suspension */