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

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

haskell/haskell-zlib/README

@@ -1,7 +1,8 @@
-This is a library for Haskell programs. It provides a pure interface for
-compressing and decompressing streams of data represented as lazy ByteStrings.
-It uses the zlib C library so it has high performance. It supports the "zlib",
-"gzip" and "raw" compression formats.
+This is a library for Haskell programs. It provides a pure interface
+for compressing and decompressing streams of data represented
+as lazy ByteStrings.  It uses the zlib C library so it has high
+performance. It supports the "zlib", "gzip" and "raw" compression
+formats.
 
 After uninstalling, run the following command to unregister the package
 from the ghc package database:   ghc-pkg recache