Update git-http-fetch documentation

Documentation/git-http-fetch.txt: --recover to resume a failed fetch
operation.

Signed-off-by: Andrew Ruder <andy@aeruder.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/Documentation/git-http-fetch.txt b/Documentation/git-http-fetch.txt
index 7dc2df3..4deabc3 100644
--- a/Documentation/git-http-fetch.txt
+++ b/Documentation/git-http-fetch.txt
@@ -39,6 +39,10 @@
 
 		<commit-id>['\t'<filename-as-in--w>]
 
+--recover::
+	Verify that everything reachable from target is fetched.  Used after
+	an earlier fetch is interrupted.
+
 Author
 ------
 Written by Linus Torvalds <torvalds@osdl.org>