Fix broken link on README to docs for v0.10.x
Fix broken link on README to docs for v0.10.x

ScottKbka/active_model_serializers,NullVoxPopuli/active_model_serializers,NullVoxPopuli/active_model_serializers,fabianoleittes/active_model_serializers,nurey/active_model_serializers,cassidycodes/active_model_serializers,rails-api/active_model_serializers,Updater/active_model_serializers,groyoh/active_model_serializers,nurey/active_model_serializers,nurey/active_model_serializers,Updater/active_model_serializers,ScottKbka/active_model_serializers,NullVoxPopuli/active_model_serializers,groyoh/active_model_serializers,Updater/active_model_serializers,groyoh/active_model_serializers,ScottKbka/active_model_serializers