Fix hour in date formatting

A few code locations incorrectly use the SimpleDateFormat patterns and use hh (hour in am/pm) instead of HH (hour in day) for the hour specification, resulting in incorrectly displayed dates:

• org.nuxeo.apidoc.introspection.DateTimeFormat: yyyyMMdd'T'hhmmss'Z' / yyyyMMdd'T'hhmmssZ
• org.nuxeo.drive.operations.NuxeoDriveGenerateConflictedItemName: yyyy-MM-dd hh-mm
• org.nuxeo.ecm.platform.scanimporter.service.ScanFileFieldMapping: yyyy-MM-dd'T'hh:mm:ss.sss'Z'
• org.nuxeo.ecm.platform.smart.query.jsf.IncrementalSmartNXQLQuery: yyyy-MM-dd hh:mm:ss
• org.nuxeo.template.XMLSerializer: yyyy-MM-dd hh:mm:ss:sss (NXP-22071)
• org.nuxeo.template.processors.docx/WordXMLRawTemplateProcessor: yyyy-MM-dd'T'hh:mm:ss'Z' (NXP-22071)