Document CookieWebSessionIdResolver #1614
Description
The Spring Session Core reference documentation has a nice section about how to customize the session cookie by exposing a CookieSerializer bean. However, this does not work for reactive applications.
After digging the source code, I found out that reactive applications need instead to expose a WebSessionIdResolver bean, such as CookieWebSessionIdResolver.
I believe having a new section in the reference documentation would help others. Ideally, this new section and the 9.13 section about the CookieSerializer would link to each other.