manpages: italicize git command names (which were in teletype font)

The names of git commands are not meant to be entered at the
commandline; they are just names. So we render them in italics,
as is usual for command names in manpages.

Using

	doit () {
	  perl -e 'for (<>) { s/\`(git-[^\`.]*)\`/'\''\1'\''/g; print }'
	}
	for i in git*.txt config.txt diff*.txt blame*.txt fetch*.txt i18n.txt \
	        merge*.txt pretty*.txt pull*.txt rev*.txt urls*.txt
	do
	  doit <"$i" >"$i+" && mv "$i+" "$i"
	done
	git diff

.

Signed-off-by: Jonathan Nieder <jrnieder@uchicago.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/Documentation/git-peek-remote.txt b/Documentation/git-peek-remote.txt
index c3ed4a1..79c03ee 100644
--- a/Documentation/git-peek-remote.txt
+++ b/Documentation/git-peek-remote.txt
@@ -12,12 +12,12 @@
 
 DESCRIPTION
 -----------
-This command is deprecated; use `git-ls-remote` instead.
+This command is deprecated; use 'git-ls-remote' instead.
 
 OPTIONS
 -------
 --upload-pack=<git-upload-pack>::
-	Use this to specify the path to `git-upload-pack` on the
+	Use this to specify the path to 'git-upload-pack' on the
 	remote side, if it is not found on your $PATH. Some
 	installations of sshd ignores the user's environment
 	setup scripts for login shells (e.g. .bash_profile) and
@@ -30,7 +30,7 @@
 
 <host>::
 	A remote host that houses the repository.  When this
-	part is specified, `git-upload-pack` is invoked via
+	part is specified, 'git-upload-pack' is invoked via
 	ssh.
 
 <directory>::