Fix formatting of example blocks

With the new stylesheet example blocks (delimited with ====) are
rendered as rather intrusive boxes with large padding in yellow
and grey.

This patch replaces the example blocks with simple code blocks
(delimited with ----) that better match the overall style of the
documentation.

Change-Id: Id95387cdb153332c2066e2d5e378697647dbca52
Signed-off-by: Michael Ochmann <michael.ochmann@sap.com>

Documentation/cmd-show-connections.txt

diff --git a/Documentation/cmd-show-connections.txt b/Documentation/cmd-show-connections.txt
index d320eee..41a62c9 100644
--- a/Documentation/cmd-show-connections.txt
+++ b/Documentation/cmd-show-connections.txt
@@ -62,22 +62,22 @@
 == EXAMPLES
 
 With reverse DNS lookup (default):
-====
+----
 	$ ssh -p 29418 review.example.com gerrit show-connections
 	Session     Start     Idle   User            Remote Host
 	--------------------------------------------------------------
 	3abf31e6 20:09:02 00:00:00  jdoe            jdoe-desktop.example.com
 	--
-====
+----
 
 Without reverse DNS lookup:
-====
+----
 	$ ssh -p 29418 review.example.com gerrit show-connections -n
 	Session     Start     Idle   User            Remote Host
 	--------------------------------------------------------------
 	3abf31e6 20:09:02 00:00:00  a/1001240       10.0.0.1
 	--
-====
+----
 
 GERRIT
 ------