fix spelling in API docu, command reply, logging, descriptions

sections: ctrl, gb, gsm, vty

Change-Id: Iac211b5cd8504da36b699777b95a2448dd7c3e70
diff --git a/src/gb/gprs_ns.c b/src/gb/gprs_ns.c
index 76e70ff..0649899 100644
--- a/src/gb/gprs_ns.c
+++ b/src/gb/gprs_ns.c
@@ -138,7 +138,7 @@
 };
 
 static const struct osmo_stat_item_desc nsvc_stat_description[] = {
-	{ "alive.delay", "ALIVE reponse time        ", "ms", 16, 0 },
+	{ "alive.delay", "ALIVE response time        ", "ms", 16, 0 },
 };
 
 static const struct osmo_stat_item_group_desc nsvc_statg_desc = {