[spp] [PATCH] docs: update command examples of spp_nfv

[x-fn-spp at sl.ntt-tx.co.jp]

From: Hideyuki Yamashita <yamashita.hideyuki at po.ntt-tx.co.jp>

Update command examples of `add ring` and `del ring` because there are
still old.

Signed-off-by: Hideyuki Yamashita <yamashita.hideyuki at po.ntt-tx.co.jp>
Signed-off-by: Naoki Takada <takada.naoki at lab.ntt.co.jp>
---
 docs/guides/setup/use_cases.rst | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/docs/guides/setup/use_cases.rst b/docs/guides/setup/use_cases.rst
index 2c83fe0..f825a98 100644
--- a/docs/guides/setup/use_cases.rst
+++ b/docs/guides/setup/use_cases.rst
@@ -198,7 +198,7 @@ All of ring PMDs is showed with ``status`` subcommand.
 .. code-block:: console
 
     spp > sec 1;add ring 0
-    recv:6:{addring0}
+    addring0
     spp > sec 1;status
     status: idling
     ports:
@@ -213,7 +213,7 @@ use it anymore.
 .. code-block:: console
 
     spp > sec 1;del ring 0
-    recv:6:{delring0}
+    delring0
     spp > sec 1;status
     status: idling
     ports:
-- 
2.18.0