com ext upgrading correction

Author: weltling

UPGRADING

@@ -481,7 +481,7 @@ UPGRADE NOTES - PHP 5.3
 
 - 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".
+  with the "extension = php_com_dotnet.dll" directive in php.ini.
 
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 11.1 New in PHP 5.3.4