DOC: Add tune.h2.max-frame-size option to table of contents

This option was introduced in a24b35ca18885809001454699b4e44b49abccde6, which
is 2.0+. It should be backported as far as it easily applies.

(cherry picked from commit 6a8638ff5341939fd6a236725d466f3b9eadcc9d)
Signed-off-by: William Lallemand <wlallemand@haproxy.org>
1 file changed