Fix typos

ANNOUNCEMENT

-A N N O U N C E M E N T -- OpenLDAP 2.2
+A N N O U N C E M E N T -- OpenLDAP 2.3
 
     The OpenLDAP Project is pleased to announce the availability
-    of OpenLDAP Software 2.2, a suite of the Lightweight Directory
+    of OpenLDAP Software 2.3, a suite of the Lightweight Directory
     Access Protocol (v3) servers, clients, utilities, and
     development tools.
 

CHANGES

 OpenLDAP 2.3 Change Log
 
-OpenLDAP 2.2.0 Release
-	Initial "alpha" release
+OpenLDAP 2.3.0alpha Release
+	Alpha release