Fixed auto_brodcast in visit_attributes (#4407)

Co-authored-by: Michał Karzyński <postrational@users.noreply.github.com>
Co-authored-by: Scott Cyphers <diyessi@users.noreply.github.com>

src/ngraph/op/util/binary_elementwise_comparison.cpp

@@ -59,6 +59,6 @@ void op::util::BinaryElementwiseComparison::validate_and_infer_types()
 
 bool op::util::BinaryElementwiseComparison::visit_attributes(AttributeVisitor& visitor)
 {
-    visitor.on_attribute("autob", m_autob);
+    visitor.on_attribute("auto_broadcast", m_autob);
     return true;
 }