haskell/haskell-digest: Wrap README at 72 columns.

Signed-off-by: B. Watson <yalhcru@gmail.com>

haskell/haskell-digest/README

@@ -1,7 +1,7 @@
-This is a library for Haskell programs, providing efficient cryptographic
-hash implementations for strict and lazy bytestrings. CRC32 and Adler32
-are supported; they are implemented as FFI bindings to efficient code from
-zlib.
+This is a library for Haskell programs, providing efficient
+cryptographic hash implementations for strict and lazy
+bytestrings. CRC32 and Adler32 are supported; they are implemented as
+FFI bindings to efficient code from zlib.
 
 After uninstalling, run the following command to unregister the package
 from the ghc package database:   ghc-pkg recache