rlcmac: Fix name of  RRBP_Nplus21_or_22_mod_2715648

It's RRBP_Nplus12_or_22_mod_2715648 not RRBP_Nplus22_or_22_mod_2715648

Change-Id: Idb2ab447611a0571292b8cb31e9f279d0e98966f
diff --git a/library/RLCMAC_Types.ttcn b/library/RLCMAC_Types.ttcn
index a03dd86..a30a43c 100644
--- a/library/RLCMAC_Types.ttcn
+++ b/library/RLCMAC_Types.ttcn
@@ -17,7 +17,7 @@
 	type enumerated MacRrbp {
 		RRBP_Nplus13_mod_2715648	('00'B),
 		RRBP_Nplus17_or_18_mod_2715648	('01'B),
-		RRBP_Nplus22_or_22_mod_2715648	('10'B),
+		RRBP_Nplus21_or_22_mod_2715648	('10'B),
 		RRBP_Nplus26_mod_2715648	('11'B)
 	} with { variant "FIELDLENGTH(2)" };