Corrected CatchAllConverter ordering docs

Corrected documentation regarding the CatchAllConverter in the XStream
javadocs.

spring-oxm/src/main/java/org/springframework/oxm/xstream/CatchAllConverter.java

@@ -27,7 +27,7 @@ import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
  * (un)marshalling.
  * <p>Main purpose of this class is to
  * {@linkplain com.thoughtworks.xstream.XStream#registerConverter(com.thoughtworks.xstream.converters.Converter, int) register}
- * this converter as a catchall last converter with a
+ * this converter as a catchall converter with a
  * {@linkplain com.thoughtworks.xstream.XStream#PRIORITY_NORMAL normal}
  * or higher priority, in addition to converters that explicitly support the domain
  * classes that should be supported. As a result, default XStream converters with lower

spring-oxm/src/main/java/org/springframework/oxm/xstream/XStreamMarshaller.java

@@ -92,7 +92,7 @@ import org.springframework.util.xml.StaxUtils;
  * {@code XStreamMarshaller} to unmarshal external XML, set the
  * {@link #setSupportedClasses(Class[]) supportedClasses} and
  * {@link #setConverters(ConverterMatcher[]) converters} properties (possibly using a
- * {@link CatchAllConverter} as the last converter in the list) or override the
+ * {@link CatchAllConverter}) or override the
  * {@link #customizeXStream(XStream)} method to make sure it only accepts the classes
  * you want it to support.
  *