psmisc: update homepage link

The gitlab repo is much more informative and updated.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/psmisc/Config.in

@@ -6,4 +6,4 @@ config BR2_PACKAGE_PSMISC
 	help
 	  Helpful /proc related utilities such as pstree, fuser, and killall
 
-	  http://psmisc.sourceforge.net/
+	  https://gitlab.com/psmisc/psmisc