misc: examples/kemi - small typo in lua example

(cherry picked from commit c1d3fdb31871078b666278a933dbab20a0a8dca3)
(cherry picked from commit c90fb35fbd5091e929f8b3b5064d8fe9ef674487)

misc/examples/kemi/kamailio-basic-kemi-lua.lua

@@ -239,7 +239,7 @@ function ksr_route_location()
 end
 
 
--- IP authorization and user uthentication
+-- IP authorization and user authentication
 function ksr_route_auth()
 	if not KSR.auth then
 		return 1;