man ip-netns: Fix shifted layout at bottom of 'ip netns del'

Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

man/man8/ip-netns.8

@@ -116,12 +116,18 @@ $ ip netns exec net0 SOME_PROCESS_IN_BACKGROUND
 $ ip netns del net0
 .RE
 
+.RS
 and eth0 will appear in the default netns only after SOME_PROCESS_IN_BACKGROUND
 will exit or will be killed. To prevent this the processes running in net0
 should be killed before deleting the netns:
 
-    $ ip netns pids net0 | xargs kill
-    $ ip netns del net0
+.RE
+.RS 10
+$ ip netns pids net0 | xargs kill
+.RE
+.RS 10
+$ ip netns del net0
+.RE
 
 .TP
 .B ip netns set NAME NETNSID - assign an id to a peer network namespace