updated README.md

Author: nodesocket

README.md

@@ -2,9 +2,9 @@
 
 Optimized for use with [PHP 8.0](https://www.php.net/releases/8.0/en.php).
 
- - [Named argument](https://wiki.php.net/rfc/named_params)
+ - [Named arguments](https://wiki.php.net/rfc/named_params)
  - [Type declaration for arguments, return values, class props](https://www.php.net/manual/en/language.types.declarations.php)
- - [Class prop and method visability](https://www.php.net/manual/en/language.oop5.visibility.php)
+ - [Class props and method visability](https://www.php.net/manual/en/language.oop5.visibility.php)
 
 See [example.php](https://github.com/nodesocket/aws_smps/blob/master/example.php) for a full example.