fix missing , in lua examples

Co-authored-by: refaelsh <refaelsh@pm.me>

README.org

@@ -30,7 +30,7 @@ you to add anything extra to your ~init.el~.
   cmd = { "OrgExecute", "OrgTangle" },
   opts = {
     -- by default, none are enabled
-    langs = { "python", "lua", ... }
+    langs = { "python", "lua", ... },
 
     -- paths to emacs packages to additionally load
     load_paths = {}
@@ -52,7 +52,7 @@ use {
   config = function ()
     require("orgmode-babel").setup({
       -- by default, none are enabled
-      langs = { "python", "lua", ... }
+      langs = { "python", "lua", ... },
 
       -- paths to emacs packages to additionally load
       load_paths = {}