DOC: config: Move req.hdrs and req.hdrs_bin in L7 samples fetches section

req.hdrs and req.hdrs_bin are L7 sample fetches, not L6. They were in the wrong
section.

This patch may be backported as far as 1.8.

(cherry picked from commit 687a68e2d04900e84317d066de80891a7f848747)
Signed-off-by: William Lallemand <wlallemand@haproxy.org>
1 file changed