package/usbmount: update the upstream URL in Config.in

Update the upstream URL in the help text in Config.in. This
addresses the 'Invalid(Err)' URL status in the package stats
web page output.

Signed-off-by: Mark Corbin <mark@dibsco.co.uk>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 6fd8a74276c30cc01e0e8718479360138a7fb678)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/usbmount/Config.in

@@ -7,7 +7,7 @@ config BR2_PACKAGE_USBMOUNT
 	  devices when they are plugged in, and unmounts them when
 	  they are removed.
 
-	  http://usbmount.alioth.debian.org/
+	  https://wiki.debian.org/usbmount
 
 comment "usbmount requires udev to be enabled"
 	depends on !BR2_PACKAGE_HAS_UDEV