docs: Updated "VPP with Containers" use-case section

Type: improvement

Modified "VPP with Containers" doc section to run on Ubuntu 22.04 LTS.

Change-Id: Ic09b88cf0e3b492711222a1bb24552de964a7d03
Signed-off-by: hsandid <halsandi@cisco.com>
diff --git a/docs/usecases/containers/index.rst b/docs/usecases/containers/index.rst
index 65bf2ae..f8e0722 100644
--- a/docs/usecases/containers/index.rst
+++ b/docs/usecases/containers/index.rst
@@ -5,6 +5,7 @@
 
 This section will cover connecting two Linux containers with VPP. A container is essentially a more efficient and faster VM, due to the fact that a container does not simulate a separate kernel and hardware. You can read more about `Linux containers here <https://linuxcontainers.org/>`_.
 
+This section has been tested with Ubuntu 22.04 LTS.
 
 .. toctree::