download.html: fix browse source URL

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

docs/download.html

@@ -19,7 +19,7 @@ follow development, but cannot or do not wish to use Git.
 	<li> Click here to <a href="downloads/snapshots/">Daily Snapshots</a>.
 	</li>
 
-	<li> Click here to <a href="http://sources.busybox.net/index.py/trunk/buildroot/">browse the source tree</a>.
+	<li> Click here to <a href="http://git.buildroot.net/buildroot">browse the source tree</a>.
 	</li>
 
 	<li>Anonymous <a href="git.html">Git access</a> is available.