Fix a spelling mistake in a comment.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@49053 65c4cc65-6c06-0410-ace0-fbb531ad65f3

include/asterisk/smdi.h

@@ -88,7 +88,7 @@ struct ast_smdi_mwi_queue {
  *
  * The ast_smdi_interface structure holds information on a serial port that
  * should be monitored for SMDI activity.  The structure contains a message
- * queue of messages that have been recieved on the interface.
+ * queue of messages that have been received on the interface.
  */
 struct ast_smdi_interface {
 	ASTOBJ_COMPONENTS_FULL(struct ast_smdi_interface, SMDI_MAX_FILENAME_LEN, 1);