A link checker reports the following, in the `module-summary.html` file generated for `java.xml/module-info.java`.

The `name already declared` indicate duplicate names in `module-info.java`.
The `XPAth` looks like a possible typo.

`ConfigurationFile` should maybe be `Conf_CF`.

api/java.xml/module-summary.html:502: name already declared: DOM
api/java.xml/module-summary.html:514: name already declared: SAX
api/java.xml/module-summary.html:539: name already declared: Validation
api/java.xml/module-summary.html:825: id not found: api/java.xml/module-summary.html#XPAth
api/java.xml/module-summary.html:847: id not found: api/java.xml/module-summary.html#XPAth
api/java.xml/javax/xml/XMLConstants.html:585: id not found: api/java.xml/module-summary.html#ConfigurationFile
api/java.xml/javax/xml/XMLConstants.html:622: id not found: api/java.xml/module-summary.html#ConfigurationFile
api/java.xml/javax/xml/XMLConstants.html:661: id not found: api/java.xml/module-summary.html#ConfigurationFile
api/java.xml/javax/xml/XMLConstants.html:710: id not found: api/java.xml/module-summary.html#ConfigurationFile
api/java.xml/javax/xml/stream/XMLEventFactory.html:503: id not found: api/java.xml/module-summary.html#ConfigurationFile
api/java.xml/javax/xml/stream/XMLInputFactory.html:734: id not found: api/java.xml/module-summary.html#ConfigurationFile
api/java.xml/javax/xml/stream/XMLOutputFactory.html:489: id not found: api/java.xml/module-summary.html#ConfigurationFile
api/java.xml/module-summary.html:954: id not found: api/java.xml/module-summary.html#PropPrec