Fix some typos in stdout output

Change-Id: I0dbb438f3bfbaf9744717cbeec31ceefdd679ee9
Related: OS#1694
diff --git a/openbsc/src/osmo-bsc/osmo_bsc_vty.c b/openbsc/src/osmo-bsc/osmo_bsc_vty.c
index e623c9c..86ccec4 100644
--- a/openbsc/src/osmo-bsc/osmo_bsc_vty.c
+++ b/openbsc/src/osmo-bsc/osmo_bsc_vty.c
@@ -688,7 +688,7 @@
 DEFUN(cfg_net_bsc_mid_call_text,
       cfg_net_bsc_mid_call_text_cmd,
       "mid-call-text .TEXT",
-      "Set the USSD notifcation to be send.\n" "Text to be sent\n")
+      "Set the USSD notification to be send.\n" "Text to be sent\n")
 {
 	struct osmo_bsc_data *data = osmo_bsc_data(vty);
 	char *txt = argv_concat(argv, argc, 0);