301 on community.html

[sorawee]

Since #255, the page https://racket-lang.org/community.html and https://racket-lang.org/irc-chat.html are supposed to get redirected to https://racket-lang.org/#community via the http-equiv="refresh" mechanism. Somehow this mechanism doesn't work, and the page is simply redirected to https://racket-lang.org Could it be that there's a AWS configuration that takes priority for redirection?