DIAMETER_Emulation: Fix typo in comment

Change-Id: I6163fc9153082598c7211b16a7c18fb95cf3d08a
diff --git a/library/DIAMETER_Emulation.ttcn b/library/DIAMETER_Emulation.ttcn
index e53f4e5..0f1b9fe 100644
--- a/library/DIAMETER_Emulation.ttcn
+++ b/library/DIAMETER_Emulation.ttcn
@@ -399,7 +399,7 @@
 	inout DIAMETEREM_register;
 } with { extension "internal" };
 
-/* Function that can be used as create_cb and will usse the expect table */
+/* Function that can be used as create_cb and will use the expect table */
 function ExpectedCreateCallback(PDU_DIAMETER msg, hexstring imsi, charstring id)
 runs on DIAMETER_Emulation_CT return DIAMETER_ConnHdlr {
 	var DIAMETER_ConnHdlr ret := null;