Updated comment [skip ci]

Author: ankane

test/load_test.rb

@@ -36,7 +36,7 @@ def test_false
     assert_equal "Product A", JSON.parse(product.to_json)["name"]
     assert_equal "Product A", JSON.parse(Product.search("product", load: false).to_a.to_json).first["name"]
 
-    # confirm as_json attribute does not override method
+    # confirm as_json attribute does not override method when Active Support core extensions loaded
     assert_equal ({"as_json" => 1}), Searchkick::HashWrapper.new({"as_json" => 1}).as_json
   end