NEWS: Associate FR to xxHash additions

[ci skip]

Signed-off-by: Anatol Belski <ab@php.net>

Author: weltling

NEWS

@@ -18,7 +18,7 @@ PHP                                                                        NEWS
 
 - hash:
   . Implemented FR #68109 (Add MurmurHash V3). (Anatol, Michael)
-  . Implemented xxHash support. (Anatol)
+  . Implemented FR #73385 (Add xxHash support). (Anatol)
 
 - MySQLi:
   . Fixed bug #70372 (Emulate mysqli_fetch_all() for libmysqlclient). (Nikita)