Escaped curly braces in message property.

Without escaping `MessageFormatter` is unable to process the message.

Author: asbachb

jaxb-ri/xjc/src/main/resources/com/sun/tools/xjc/generator/bean/field/MessageBundle.properties

@@ -27,7 +27,7 @@ DEFAULT_GETTER_LIST_JAVADOC = \
         <p>This accessor method returns a reference to the live list,\n\
         not a snapshot. Therefore any modification you make to the\n\
         returned list will be present inside the Jakarta XML Binding object.\n\
-        This is why there is not a {@code set} method for the {0} property.</p>\n\n\
+        This is why there is not a '{'@code set'}' method for the {0} property.</p>\n\n\
         <p>\n\
         For example, to add a new item, do as follows:\n\
         </p>\n\