DOC: lua: update a few doc URLs

The HAProxy doc was updated to point to docs.haproxy.org.
The HAProxy API doc was returning a 404, let's point to version 2.6.
This should be backported with 1.9dev modified to match the respective
versions.

(cherry picked from commit 77ec4626704e15461c58e32b26cb4c2adc6f50ce)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit 0e73b7b9ed624fffae2bb349c8dd7aa3bc49fbab)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
1 file changed