Don't abbreviate ip(8) arguments in examples and tests

ip(8)'s ability to take abbreviated arguments (e.g. "li sh" instead of
"link show") is very handy when using it interactively, but it doesn't make
for very readable scripts and examples when shown that way.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

contrib/kata-containers/README.md

@@ -259,7 +259,7 @@ we can now:
 
 ### verify that addresses are properly configured
 
-    crictl exec $c ip ad sh
+    crictl exec $c ip addr show
 
 ## Enable support for ICMP/ICMPv6 Echo Request