Bypass the rendering differences in AsciiDoctor.

AsciiDoctor have different understanding of [verse] with asciidoc, causing some
rendering differences. To get similar result with asciidoc, we use something
else instead of [verse] now.

Screenshots:
before:
http://imgur.com/JKMdBiv
after:
http://imgur.com/yFVvVac

Change-Id: I14e84f0e998e1e87b633681e8028ad657bde07e4

Documentation/cmd-show-caches.txt

diff --git a/Documentation/cmd-show-caches.txt b/Documentation/cmd-show-caches.txt
index 8c64b05..7b93dda 100644
--- a/Documentation/cmd-show-caches.txt
+++ b/Documentation/cmd-show-caches.txt
@@ -7,8 +7,9 @@
 
 SYNOPSIS
 --------
-[verse]
+--
 'ssh' -p <port> <host> 'gerrit show-caches' [--gc] [--show-jvm]
+--
 
 DESCRIPTION
 -----------