[PATCH] typo in BK-usage.txt

Pavel Machek <pavel@ucw.cz>: typo in BK-usage.txt:

  Them them is not english...

Documentation/BK-usage/bk-kernel-howto.txt

@@ -27,7 +27,7 @@ fundamental disruption in the standard workflow of changes, commits,
 and merges.  You will need to take a few minutes to think about
 how to best work under BitKeeper, and re-optimize things a bit.
 In some sense it is a bit radical, because it might described as
-tossing changes out into a maelstrom and having them them magically
+tossing changes out into a maelstrom and having them magically
 land at the right destination... but I'm getting ahead of myself.
 
 Let's start with this progression: