HSEARCH-1644

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

a few lines higher up:

> The following chapter will guide you through the initial steps required
to integrate Hibernate Search into an existing Hibernate enabled application

I think we should be more specific and explicitly use the term 'ORM'

The following chapter will guide you through the initial steps required
to integrate Hibernate Search into an existing Hibernate ORM enabled application