Cosmetic: Fix typo: Siganlling->Signalling

Change-Id: I92b39eebfba396ee7690e99de09ee20593b7139d
diff --git a/tests/handover/handover_test.c b/tests/handover/handover_test.c
index ab32a29..82afbe5 100644
--- a/tests/handover/handover_test.c
+++ b/tests/handover/handover_test.c
@@ -1323,7 +1323,7 @@
 	},
 	[DRSL] = {
 		.name = "DRSL",
-		.description = "A-bis Radio Siganlling Link (RSL)",
+		.description = "A-bis Radio Signalling Link (RSL)",
 		.color = "\033[1;35m",
 		.enabled = 1, .loglevel = LOGL_DEBUG,
 	},