[MODEL] Fixed incorrect indentation in integration test

✂️

Closes elastic#372

Author: treby

elasticsearch-model/test/integration/active_record_basic_test.rb

@@ -128,7 +128,7 @@ class ::Article < ActiveRecord::Base
           assert_equal 1, response.records.size
         end
 
-         should "update specific attributes" do
+        should "update specific attributes" do
           article = Article.first
 
           response = Article.search 'title:special'