fix formatting in PDF

documentation/src/main/asciidoc/introduction/Interacting.adoc

@@ -618,14 +618,16 @@ Either:
 
 [source,java]
 ----
-HibernateCriteriaBuilder cb = entityManagerFactory.unwrap(SessionFactory.class).getCriteriaBuilder();
+HibernateCriteriaBuilder cb =
+        entityManagerFactory.unwrap(SessionFactory.class).getCriteriaBuilder();
 ----
 
 Or simply:
 
 [source,java]
 ----
-HibernateCriteriaBuilder cb = (HibernateCriteriaBuilder) entityManagerFactory.getCriteriaBuilder();
+HibernateCriteriaBuilder cb =
+        (HibernateCriteriaBuilder) entityManagerFactory.getCriteriaBuilder();
 ----
 ====
 
@@ -651,6 +653,7 @@ query.select(book).where(where)
 :generator-guide: {userGuideBase}#tooling-modelgen
 
 Here, the classes `Book_` and `Author_` are classes generated by Hibernate's {generator}[JPA Metamodel Generator], which is documented in the {generator-guide}[User Guide].
+They let us refer to attributes of our entities in a typesafe way.
 
 [CAUTION]
 // .Injection attacks and criteria queries