fixed link

--- a/src/HOL/Lambda/README.html	Thu May 18 19:10:08 2000 +0200
+++ b/src/HOL/Lambda/README.html	Sat May 20 15:15:02 2000 +0200
@@ -10,13 +10,13 @@
 
 
 The paper
-<A HREF="http://www4.informatik.tu-muenchen.de/~nipkow/pubs/ic.html">
+<A HREF="http://www.in.tum.de/~nipkow/pubs/jar2000.html">
 More Church-Rosser Proofs (in Isabelle/HOL)</A>
 describes the whole theory.
 
 <HR>
 
-<P>Last modified 5/11/96
+<P>Last modified 20.5.2000
 
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 </HTML>