Documentation needs to be updated with instructions for STOMP Client

[linghengqian]

• In https://docs.spring.io/spring-framework/docs/6.0.0-M3/reference/html/web.html#websocket-stomp-enable , the documentation mentions that JSteunou/webstomp-client is jmesnil/stomp-websocket , which library's most active and maintained development successor. But actually JSteunou/webstomp-client stopped updating in 2018 and archived the Git repository. This means that JSteunou/webstomp-client will no longer be maintained, I think it should be marked as JSteunou/webstomp-client and jmesnil/stomp-websocket is no longer maintained.
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[rstoyanchev]

This was updated in 6.0.11 with #30857. However, I see one more reference that needs changing.