fix discrepancy in GPL version number. Pointed out by "Marsh David" <dmarsh@bigw.com.au>

diff --git a/docs/busybox.net/about.html b/docs/busybox.net/about.html
index e3b937b..475dd80 100644
--- a/docs/busybox.net/about.html
+++ b/docs/busybox.net/about.html
@@ -19,6 +19,6 @@
 <p>BusyBox is maintained by
 <a href="mailto:vda.linux@googlemail.com">Denis Vlasenko</a>,
 and licensed under the <a href="/license.html">GNU GENERAL PUBLIC LICENSE</a>
-version 2 or later.</p>
+version 2.</p>
 
 <!--#include file="footer.html" -->