doc/pack-refs: convert synopsis and options to new style

Replace [verse] with [synopsis] in the SYNOPSIS block and remove
single-quote formatting from the command name.

Backtick-quote all option terms in the OPTIONS section via the included
pack-refs-options.adoc and convert the standalone placeholder _<branch>_
in prose.

Signed-off-by: Todd Zullinger <tmz@pobox.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/git-pack-refs.adoc

diff --git a/Documentation/git-pack-refs.adoc b/Documentation/git-pack-refs.adoc
index fde9f2f..69e018d 100644
--- a/Documentation/git-pack-refs.adoc
+++ b/Documentation/git-pack-refs.adoc
@@ -7,8 +7,8 @@
 
 SYNOPSIS
 --------
-[verse]
-'git pack-refs' [--all] [--no-prune] [--auto] [--include <pattern>] [--exclude <pattern>]
+[synopsis]
+git pack-refs [--all] [--no-prune] [--auto] [--include <pattern>] [--exclude <pattern>]
 
 DESCRIPTION
 -----------
@@ -52,8 +52,8 @@
 ----
 
 Older documentation written before the packed-refs mechanism was
-introduced may still say things like ".git/refs/heads/<branch> file
-exists" when it means "branch <branch> exists".
+introduced may still say things like ".git/refs/heads/_<branch>_ file
+exists" when it means "branch _<branch>_ exists".
 
 
 GIT

Documentation/pack-refs-options.adoc

diff --git a/Documentation/pack-refs-options.adoc b/Documentation/pack-refs-options.adoc
index 0b11282..2263648 100644
--- a/Documentation/pack-refs-options.adoc
+++ b/Documentation/pack-refs-options.adoc
@@ -1,4 +1,4 @@
---all::
+`--all`::
 
 The command by default packs all tags and refs that are already
 packed, and leaves other refs
@@ -8,12 +8,12 @@
 of hidden refs, broken refs, and symbolic refs. Useful for a repository
 with many branches of historical interests.
 
---no-prune::
+`--no-prune`::
 
 The command usually removes loose refs under `$GIT_DIR/refs`
 hierarchy after packing them.  This option tells it not to.
 
---auto::
+`--auto`::
 
 Pack refs as needed depending on the current state of the ref database. The
 behavior depends on the ref format used by the repository and may change in the
@@ -29,7 +29,7 @@
 	  maintains the property that N is at least twice as big as N+1. Only
 	  tables that violate this property are compacted.
 
---include <pattern>::
+`--include <pattern>`::
 
 Pack refs based on a `glob(7)` pattern. Repetitions of this option
 accumulate inclusion patterns. If a ref is both included in `--include` and
@@ -38,7 +38,7 @@
 be packed. When used with `--all`, it will be a noop. Use `--no-include` to clear
 and reset the list of patterns.
 
---exclude <pattern>::
+`--exclude <pattern>`::
 
 Do not pack refs matching the given `glob(7)` pattern. Repetitions of this option
 accumulate exclusion patterns. Use `--no-exclude` to clear and reset the list of