libosmo-mgcp: Cosmetic spelling fixes in comments

Change-Id: Ic0469c2a4d69b55a6a90653ad7ea1ad89a34e4bc
diff --git a/include/osmocom/mgcp/mgcp_internal.h b/include/osmocom/mgcp/mgcp_internal.h
index 11bafe7..61d45bf 100644
--- a/include/osmocom/mgcp/mgcp_internal.h
+++ b/include/osmocom/mgcp/mgcp_internal.h
@@ -217,7 +217,7 @@
 	/*!< copy of the mode to restore the original setting (VTY) */
 	enum mgcp_connection_mode mode_orig;
 
-	/*!< connection id to identify the conntion */
+	/*!< connection id to identify the connection */
 	char id[MGCP_CONN_ID_LENGTH];
 
 	/*!< human readable name (vty, logging) */