[PATCH 2/6] doc: fix the colon type in listing aged flow rules

[Michael Baum <michaelba@nvidia.com>]

In testpmd documentation, for listing aged-out flow rules there is some
boxes of examples.

In Sphinx syntax, those boxes are achieved by "::" before. However,
in two places it uses ":" instead and the example looks like a regular
text.

This patch replace the ":" with "::" to get code box.

Fixes: 0e459ffa0889 ("app/testpmd: support flow aging")
Cc: dongz@mellanox.com
Cc: stable@dpdk.org

Signed-off-by: Michael Baum <michaelba@nvidia.com>
---
 doc/guides/testpmd_app_ug/testpmd_funcs.rst | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
index b5649d9d9a..b5fea1396c 100644
--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
@@ -4259,7 +4259,7 @@ Listing and destroying aged flow rules
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 ``flow aged`` simply lists aged flow rules be get from api ``rte_flow_get_aged_flows``,
-and ``destroy`` parameter can be used to destroy those flow rules in PMD.
+and ``destroy`` parameter can be used to destroy those flow rules in PMD::
 
    flow aged {port_id} [destroy]
 
@@ -4294,7 +4294,7 @@ will be ID 3, ID 1, ID 0::
    1       0       0       i--
    0       0       0       i--
 
-If attach ``destroy`` parameter, the command will destroy all the list aged flow rules.
+If attach ``destroy`` parameter, the command will destroy all the list aged flow rules::
 
    testpmd> flow aged 0 destroy
    Port 0 total aged flows: 4
-- 
2.25.1