Fix reference docs section on inner beans

Inner beans are not prototype beans as, in contrast to what is
documented in the section for prototype beans, the inner bean does
get destruction callbacks applied.

Issue: SPR-10311

src/reference/docbook/beans-dependencies.xml

@@ -727,8 +727,7 @@ public class ExampleBean {
         container ignores these values. It also ignores the
         <literal>scope</literal> flag. Inner beans are
         <emphasis>always</emphasis> anonymous and they are
-        <emphasis>always</emphasis> scoped as <link
+        <emphasis>always</emphasis> created with the outer bean. It is
-        linkend="beans-factory-scopes-prototype">prototypes</link>. It is
         <emphasis>not</emphasis> possible to inject inner beans into
         collaborating beans other than into the enclosing bean.</para>
     </section>