fix styleci and update doc in config file

Author: rrpadilla

config/trustedproxy.php

@@ -19,15 +19,16 @@
 
     /*
      * To trust one or more specific proxies that connect
-     * directly to your server, use an array of IP addresses:
+     * directly to your server, use an array or a string separated by comma of IP addresses:
      */
-     # 'proxies' => ['192.168.1.1'],
+    // 'proxies' => ['192.168.1.1'],
+    // 'proxies' => '192.168.1.1, 192.168.1.1',
 
     /*
      * Or, to trust all proxies that connect
      * directly to your server, use a "*"
      */
-     # 'proxies' => '*',
+    // 'proxies' => '*',
 
     /*
      * Which headers to use to detect proxy related data (For, Host, Proto, Port)