[init] Fix missing comma.

init.lua

@@ -15,7 +15,7 @@ local serialize = require 'df-serialize'
 
 local moonspeak = {
     --- (string) current locale language.
-    lang = "english"
+    lang = "english",
     --- (table|nil) current raw dictionary contents, as loaded by last loadDictFile().
     dict = nil
 }