Cosmetic: fix various typos

Change-Id: Ia6a587d872b410059713f41d09ba082bac835a6b
diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index 696a10e..1859eed 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -7380,7 +7380,7 @@
 	/* ... and expect the DISC on the Um side */
 	alt {
 	[] as_l1_exp_lapdm(tr_LAPDm_DISC(tc.sapi, cr_MT_CMD, true))  {
-		/* FIXME: send a UA in resposne to the DISC */
+		/* FIXME: send a UA in response to the DISC */
 		}
 	}