Fix pom.xml in doc directory to allow VDLdocs to be generated

• Type: Task
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: liferay-faces-2.1.3-ga4, liferay-faces-3.0.3-legacy-ga4, liferay-faces-3.0.3-ga4, liferay-faces-3.1.3-ga4
• Fix Version/s: liferay-faces-2.1.4-ga5, liferay-faces-2.2.4-ga5, liferay-faces-3.0.4-legacy-ga5, liferay-faces-3.0.4-ga5, liferay-faces-3.1.4-ga5, liferay-faces-3.2.4-ga5
• Component/s: ZZZ: Legacy - POM
• Labels: None

This task require that a new plugin section be added to the pom.xml in the Liferay Faces doc directory which will generate the VDLdoc when a mvn clean package command is run in that directory.