In testpmd documentation, there are two underlines which do not
match the length of the text above.
This patch update them to be align with the guideline [1].
[1]
https://doc.dpdk.org/guides/contributing/documentation.html#section-headers
Fixes: a69c335d56 ("doc: add flow dump command in testpmd guide")
Fixes: 0e459ffa08 ("app/testpmd: support flow aging")
Cc: stable@dpdk.org
Signed-off-by: Michael Baum <michaelba@nvidia.com>
Reviewed-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Yuying Zhang <yuying.zhang@intel.com>
fb360c7506