one more correction for COM upgrading notes

Author: weltling

UPGRADING

@@ -479,9 +479,10 @@ UPGRADE NOTES - PHP 5.3
 - Firebird and SNMP support are no longer available on Windows. Firebird support
   may be reintroduced in the future.
 
-- As of PHP 5.3.15 and above the COM extension isn't compiled into PHP anymore.
-  It'll still be delivered with the standard PHP release but must be enclosed
-  with the "extension = php_com_dotnet.dll" directive in php.ini.
+- As of PHP 5.3.15 and above the COM extension isn't compiled statically in PHP
+  anymore but shared. It'll still be delivered with the standard PHP release but
+  must be activated manually with the "extension = php_com_dotnet.dll" directive
+  in php.ini.
 
 =====================
 11.1 New in PHP 5.3.4