Mention deprecation of Session.byMultipleIds() in migration guide

Author: sebersole

migration-guide.adoc

@@ -54,10 +54,12 @@ This section describes changes to contracts (classes, interfaces, methods, etc.)
 The method `contains(String,Object)` of `Session` was deprecated.
 Use `contains(Object)` instead.
 
-[[noInterceptor]]
-== SharedSessionBuilder.noInterceptor()
 
-The behavior of `SharedSessionBuilder.noInterceptor()` was changed to reflect its documented semantics.
+[[byMultipleIds]]
+=== Session.byMultipleIds() deprecated
+
+`byMultipleIds()` of `Session` and `MultiIdentifierLoadAccess` have been deprecated in favor of `Session#findMultiple`
+
 
 [[jpa]]
 === @Jpa (hibernate-testing)