Fix Javadoc errors

See gh-1467

spring-xml/src/main/java/org/springframework/xml/namespace/QNameEditor.java

@@ -26,23 +26,12 @@ import org.springframework.util.StringUtils;
  * PropertyEditor for {@code javax.xml.namespace.QName}, to populate a property of type
  * QName from a String value.
  * <p>
- * Expects the syntax
- *
- * <pre>
- * localPart
- * </pre>
- *
- * or
- *
- * <pre>
- * {namespace}localPart
- * </pre>
- *
- * or
- *
- * <pre>
- * {namespace}prefix:localPart
- * </pre>
+ * Expects one of the following syntaxes:
+ * <ul>
+ * <li>{@code localPart}</li>
+ * <li>{@code {namespace}localPart}</li>
+ * <li>{@code {namespace}prefix:localPart}</li>
+ * </ul>
  *
  * This resembles the {@code toString()} representation of {@code QName} itself, but
  * allows for prefixes to be specified as well.