Merge pull request #1692 from davbo/patch-1

Update fields.md

docs/api-guide/fields.md

@@ -347,7 +347,7 @@ As an example, let's create a field that can be used represent the class name of
             """
             Serialize the object's class name.
             """
-            return obj.__class__
+            return obj.__class__.__name__
 
 # Third party packages
 
@@ -369,4 +369,4 @@ The [drf-extra-fields][drf-extra-fields] package provides extra serializer field
 [strftime]: http://docs.python.org/2/library/datetime.html#strftime-and-strptime-behavior
 [iso8601]: http://www.w3.org/TR/NOTE-datetime
 [drf-compound-fields]: http://drf-compound-fields.readthedocs.org
-[drf-extra-fields]: https://github.com/Hipo/drf-extra-fields
\ No newline at end of file
+[drf-extra-fields]: https://github.com/Hipo/drf-extra-fields