for REST tab - Update the topic that shows in the Documentation tab of the Properties View

When you click on an element in the REST tab, in the Properties, there are two subtabs - REST and Documentation. Currently, the Documentation defaults to the Route Editor Patterns topic.

We need to update it to show a documentation topic that is specific to the REST tab.

The documentation writer (mflinn@redhat.com needs to provide a new context ID before this task can be completed. TBD week of June 4 2018.