Fix .luacheckrc, fix unused index variable, remove spaces, use tabs.

.luacheckrc

@@ -28,6 +28,8 @@ read_globals = {
 
     "protector", "isprotect",
     "homedecor_expect_infinite_stacks",
+    
+    "craftguide",
 }
 
 files["concrete/init.lua"].ignore = { "steel_ingot" }