DOC: opentracing: corrected comments in function descriptions

Several comments in the function descriptions have been corrected.

This patch must be backported as far as 2.4.

(cherry picked from commit b51e94b0b3c90322f24ed99710c769230d08c9e9)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit 035b9998b19bb2bebf2fdd4373ab38915af25d41)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
2 files changed