Document how to specify Jackson JSON view serialization hints

Closes gh-23150

Author: sdeleuze

src/docs/asciidoc/web/webflux-functional.adoc

@@ -182,6 +182,15 @@ ServerResponse.created(location).build();
 ----
 ====
 
+Depending on the codec used, it is possible to pass hint parameters to customize how the
+body is serialized or deserialized. For example, to specify a https://wiki.fasterxml.com/JacksonJsonViews[Jackson JSON view]:
+
+====
+[source,java]
+----
+ServerResponse.ok().hint(Jackson2CodecSupport.JSON_VIEW_HINT, MyJacksonView.class).body(...);
+----
+====
 
 
 [[webflux-fn-handler-classes]]