doc: fix formatting in testpmd guide

Fix formatting in testpmd user guide for hairpin operation.

Fixes: 01817b10d27c ("app/testpmd: change hairpin queues setup")
Cc: stable@dpdk.org
Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Acked-by: Xiaoyun Li <xiaoyun.li@intel.com>
Reviewed-by: Bing Zhao <bingz@nvidia.com>

diff --git a/doc/guides/testpmd_app_ug/run_app.rst b/doc/guides/testpmd_app_ug/run_app.rst
index d0621658ae64f2d6360afd1e286025a8ddc30b5d..eb48318353224ed26ec4e7fbe69f68733860ac80 100644 (file)
--- a/doc/guides/testpmd_app_ug/run_app.rst
+++ b/doc/guides/testpmd_app_ug/run_app.rst
@@ -538,8 +538,10 @@ The command line options are:
 
 *   ``--hairpin-mode=0xXX``
 
-    Set the hairpin port mode with bitmask, only valid when hairpin queues number is set.
-    bit 4 - explicit Tx flow rule
-    bit 1 - two hairpin ports paired
-    bit 0 - two hairpin ports loop
+    Set the hairpin port mode with bitmask, only valid when hairpin queues number is set::
+
+       bit 4 - explicit Tx flow rule
+       bit 1 - two hairpin ports paired
+       bit 0 - two hairpin ports loop
+
     The default value is 0. Hairpin will use single port mode and implicit Tx flow mode.