docs/guide/start-installation.md - small changes [ci skip]

docs/guide/start-installation.md

@@ -125,9 +125,9 @@ Configuring Web Servers <a name="configuring-web-servers"></a>
 
 The application installed according to the above instructions should work out of box with either
 an [Apache HTTP server](http://httpd.apache.org/) or an [Nginx HTTP server](http://nginx.org/), on
-Windows, Mac OS X, or Linux running PHP 5.4 or higher. Yii 2.0 is also compatible with facebooks
-[HHVM](http://hhvm.com/) however there are some edge cases where HHVM behaves different than native
-PHP so you have to take some extra care when using HHVM.
+Windows, Mac OS X, or Linux running PHP 5.4 or higher. Yii 2.0 is also compatible with facebook's
+[HHVM](http://hhvm.com/). However, there are some edge cases where HHVM behaves different than native
+PHP, so you have to take some extra care when using HHVM.
 
 On a production server, you may want to configure your Web server so that the application can be accessed
 via the URL `http://www.example.com/index.php` instead of `http://www.example.com/basic/web/index.php`. Such configuration