package/numactl: fix URL in help text

SGI is gone (RIP). Use the github project as landing page.

Signed-off-by: Carlos Santos <unixmania@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/numactl/Config.in

@@ -9,4 +9,4 @@ config BR2_PACKAGE_NUMACTL
 	  and memory nodes. It does this by supplying a NUMA memory
 	  policy to the operating system before running your program.
 
-	  http://oss.sgi.com/projects/libnuma/
+	  https://github.com/numactl/numactl