Change Documentation heading to Website
Change Documentation heading to Website

Simply refer the user to the website, rather than having direct links to
individual parts of the website. Let the website speak for itself.

Signed-off-by: mulhern <7b51bcf507bcd7afb72bf8663752c0ddbeb517f6@redhat.com>

stratis-storage/stratisd,stratis-storage/stratisd,stratis-storage/stratisd