Fix spec

Author: gazay

spec/gon/jbuilder_spec.rb

@@ -42,7 +42,7 @@
     it 'should raise error if you use gon.jbuilder without requiring jbuilder gem' do
       Gon.send(:remove_const, :Jbuilder)
 
-      expect { Gon.jbuilder 'some_path' }.to raise_error(NameError)
+      expect { Gon.jbuilder 'some_path' }.to raise_error
       load 'jbuilder.rb'
       load 'gon/jbuilder.rb'
     end