pcu: Fix RLCMAC template naming

There's also DL_ACK_NACK message for which a template will be introduced
soon, so let's rename and fix typos/wrong descriptions to avoid
confusion later.

Change-Id: I4a2025ad282006953fcfadf429c980b77cb94371
diff --git a/pcu/PCU_Tests_RAW.ttcn b/pcu/PCU_Tests_RAW.ttcn
index 24187b7..4a6f54a 100644
--- a/pcu/PCU_Tests_RAW.ttcn
+++ b/pcu/PCU_Tests_RAW.ttcn
@@ -738,7 +738,7 @@
 private function f_rx_rlcmac_dl_block_exp_ack_nack(out RlcmacDlBlock dl_block)
 runs on RAW_PCU_Test_CT {
 	f_rx_rlcmac_dl_block(dl_block);
-	if (not match(dl_block, tr_RLCMAC_ACK_NACK(ul_tfi := ?, tlli := ?))) {
+	if (not match(dl_block, tr_RLCMAC_UL_ACK_NACK(ul_tfi := ?, tlli := ?))) {
 		setverdict(fail, "Failed to match Packet Uplink ACK / NACK");
 		mtc.stop;
 	}