HSEARCH-1644

Docs updates ! :-)
 - https://hibernate.atlassian.net/browse/HSEARCH-1644

I find you are jumping forward and backwards here, between different things, use the provided module and extract the one we provide. I would go step by step and take the approach to the end (maybe even adding subsection). First how to use and activate the app server bundled version, then how to add the module we provide and how to enable it.