Update README for fuzzystrmatch description.

Author: bmomjian

contrib/README

@@ -56,7 +56,7 @@ fulltextindex -
 	by Maarten Boekhold <maartenb@dutepp0.et.tudelft.nl>
 
 fuzzystrmatch -
-	Levenshtein and Metaphone fuzzy string matching
+	Levenshtein, metaphone, and soundex fuzzy string matching
 	by Joe Conway <joseph.conway@home.com>, Joel Burton <jburton@scw.org>
 
 intarray -
@@ -84,9 +84,6 @@ mac -
 	Support functions for MAC address types
 	by Lawrence E. Rosenman <ler@lerctr.org>
 
-metaphone -
-	Improved Soundex function
-
 miscutil -
 	PostgreSQL assert checking and various utility functions
 	by Massimo Dal Zotto <dz@cs.unitn.it>