fix URL

htdig/htdig.spec

@@ -36,7 +36,7 @@ Version:      3.2.0b3
 Release:      20011201
 
 #   list of sources
-Source0:      http://ftp.sourceforge.net/htdig/htdig-%{version}.tar.gz
+Source0:      http://www.htdig.org/files/htdig-%{version}.tar.gz
 
 #   build information
 Prefix:       %{l_prefix}