DOC: clarify that compression works for HTTP/2

This patch clarifies that compression also works with HTTP/2. I have
picked the wording "HTTP/1.1 or above" because it is already used
elsewhere in the documentation.

I have tested that compression indeed works in HTTP/2.

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
(cherry picked from commit ff80c82877ee9765b1bde3b03a5d61be8d3bf9d2)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
1 file changed