[spp] [PATCH] docs: fix wrong descs of SPP container

[ogawa.yasufumi@lab.ntt.co.jp]

From: Yasufumi Ogawa <ogawa.yasufumi@lab.ntt.co.jp>

Signed-off-by: Yasufumi Ogawa <ogawa.yasufumi@lab.ntt.co.jp>
---
 docs/guides/tools/sppc/getting_started.rst | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/docs/guides/tools/sppc/getting_started.rst b/docs/guides/tools/sppc/getting_started.rst
index da7d3d9..a169cbb 100644
--- a/docs/guides/tools/sppc/getting_started.rst
+++ b/docs/guides/tools/sppc/getting_started.rst
@@ -105,12 +105,16 @@ All of images are referred from ``docker images`` command.
 
     .. code-block:: console
 
-        # latest DPDK on Ubuntu 16.04
+        # latest DPDK on latest Ubuntu
         $ python build/main.py -t dpdk --dist-name ubuntu --dist-ver latest
 
         # it is also the same
         $ python build/main.py -t dpdk
 
+        # or use Ubuntu 16.04
+        $ python build/main.py -t dpdk --dist-ver 16.04
+
+
 .. warning::
 
     Currently, the latest version of Ubuntu is 18.04 and DPDK is 18.05.
@@ -156,7 +160,7 @@ SPP controller is launched in the terminal 1 in this guide.
     SPP controller provides ``topo term`` which shows network
     topology in a terminal.
 
-    However, there are a new terminal apps supporing this feature.
+    However, there are a few terminals supporing this feature.
     ``mlterm`` is the most useful and easy to customize.
     Refer :doc:`../../commands/experimental` for ``topo`` command.
 
-- 
2.17.1