misc/examples/kemi: fix another small copy and paste error

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

@@ -407,7 +407,7 @@ cfgengine "sqlang"
 
 #!ifdef WITH_CFGRUBY
 modparam("app_ruby", "load", "/usr/local/etc/kamailio/kamailio-basic-kemi-ruby.rb")
-cfgengine "sqlang"
+cfgengine "ruby"
 #!else
 cfgengine "native"
 include_file "/usr/local/etc/kamailio/kamailio-basic-kemi-native.cfg"