Correct project URL.

tripwire/tripwire.spec

@@ -33,7 +33,7 @@
 #   package information
 Name:         tripwire
 Summary:      File and directory integrity checker
-URL:          http://tripwire.sourceforge.net
+URL:          http://www.tripwire.org/
 Vendor:       Tripwire, Inc
 Packager:     The OpenPKG Project
 Distribution: OpenPKG [JUNK]