DOC: Add tune.h2.be.* and tune.h2.fe.* options to table of contents

These new options were introduced in commits
9d7abda787ac76c04a7e68363d7a322918ce28a7 and
ca1027c22fda9d993cbce716163d28b1e4e8aa0f, both of which at in HAProxy 2.8+.
This patch should be backported there.

(cherry picked from commit 6b40cce10a93ab4924d9a3e999c68ca9345e53a6)
Signed-off-by: William Lallemand <wlallemand@haproxy.org>
1 file changed