[PATCH] git-svn.txt: mention how to rebuild rev_map files

[Keshav Kini <keshav.kini@gmail.com>]

The man page for `git svn` describes a situation in which "'git svn'
will not be able to rebuild" your .git/svn/**/.rev_map files, but no
mention is made of in what circumstances `git svn` *will* be able to do
so, or how to get `git svn` to do so.

This patch adds some language to the description of the 'fetch' command
to rectify this oversight, and also fixes an AsciiDoc escaping typo.

Signed-off-by: Keshav Kini <keshav.kini@gmail.com>
---
 Documentation/git-svn.txt | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/Documentation/git-svn.txt b/Documentation/git-svn.txt
index 4dd3bcb..040117a 100644
--- a/Documentation/git-svn.txt
+++ b/Documentation/git-svn.txt
@@ -103,9 +103,12 @@ COMMANDS
 
 'fetch'::
 	Fetch unfetched revisions from the Subversion remote we are
-	tracking.  The name of the [svn-remote "..."] section in the
-	.git/config file may be specified as an optional command-line
-	argument.
+	tracking.  If necessary, rebuild the .git/svn/\*\*/.rev_map.*
+	files, given the requisite information exists in commit
+	messages (see the svn.noMetadata config option for more
+	information).  The name of the [svn-remote "..."] section in
+	the .git/config file may be specified as an optional
+	command-line argument.
 
 --localtime;;
 	Store Git commit times in the local timezone instead of UTC.  This
@@ -684,7 +687,7 @@ svn-remote.<name>.noMetadata::
 +
 This option can only be used for one-shot imports as 'git svn'
 will not be able to fetch again without metadata. Additionally,
-if you lose your .git/svn/**/.rev_map.* files, 'git svn' will not
+if you lose your .git/svn/\*\*/.rev_map.* files, 'git svn' will not
 be able to rebuild them.
 +
 The 'git svn log' command will not work on repositories using
-- 
1.8.3.2