BTS_Tests: cosmetic: fix wrong altstep name in a comment

Change-Id: I4e63f309f2a7d22752f7991ebd7e672939d4e52b
diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index e715996..d03843d 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -7966,7 +7966,7 @@
 }
 
 
-/* Callback function to be called by as_TC_ms_pwr_ctrl_constant().
+/* Callback function to be called by as_TC_ms_pwr_ctrl().
  * Return value: Measurement Report to be sent (encoded octetstring). */
 type function f_TC_ms_pwr_ctrl_cb(inout SacchL1Header l1h, integer num_blocks)
 	runs on ConnHdlr return octetstring;