Make wording consistent (review feedback)

Author: handrews

versions/3.0.4.md

@@ -1567,7 +1567,7 @@ requestBody:
               $ref: '#/components/schemas/Address'
 ```
 
-An `encoding` attribute is introduced to give you control over the serialization of parts of `multipart` request bodies.  This attribute is _only_ applicable to `multipart` and `application/x-www-form-urlencoded` request bodies.
+An `encoding` attribute is introduced to give you control over the serialization of parts of `multipart` request bodies.  This attribute is _only_ applicable to request bodies, and _only_ for `multipart` and `application/x-www-form-urlencoded` media types.
 
 #### <a name="encodingObject"></a>Encoding Object