#8783: replace link to now dead hash collision FAQ.

Doc/library/hashlib.rst

@@ -142,7 +142,7 @@ A hash object has the following methods:
    http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf
       The FIPS 180-2 publication on Secure Hash Algorithms.
 
-   http://www.cryptography.com/cnews/hash.html
-      Hash Collision FAQ with information on which algorithms have known issues and
+   http://en.wikipedia.org/wiki/Cryptographic_hash_function#Cryptographic_hash_algorithms
+      Wikipedia article with information on which algorithms have known issues and
       what that means regarding their use.