Docs: Use "-l::\n--long\n" format in OPTIONS sections

The OPTIONS section of a documentation file contains a list
of the options a git command accepts.

Currently there are several variants to describe the case that
different options (almost) do the same in the OPTIONS section.

Some are:

 -f, --foo::
 -f|--foo::
 -f | --foo::

But AsciiDoc has the special form:

 -f::
 --foo::

This patch applies this form to the documentation of the whole git suite,
and removes useless em-dash prevention, so \--foo becomes --foo.

Signed-off-by: Stephan Beyer <s-beyer@gmx.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/Documentation/git-cvsserver.txt b/Documentation/git-cvsserver.txt
index b772113..3310ae2 100644
--- a/Documentation/git-cvsserver.txt
+++ b/Documentation/git-cvsserver.txt
@@ -41,10 +41,13 @@
 Don't check for `gitcvs.enabled` in config. You also have to specify a list
 of allowed directories (see below) if you want to use this option.
 
---version, -V::
+-V::
+--version::
 Print version information and exit
 
---help, -h, -H::
+-h::
+-H::
+--help::
 Print usage information and exit
 
 <directory>::