[REST] Updated docblock of amAWSAuthenticated (#5197)

* [REST] Updated docblock of amAWSAuthenticated

Because config example wasn't rendered correctly

* Deleted whitespace at end of line

Author: Naktibalda

src/Codeception/Module/REST.php

@@ -339,10 +339,10 @@ public function amNTLMAuthenticated($username, $password)
 
     /**
      * Allows to send REST request using AWS Authorization
-     * Only works with PhpBrowser
-     * Example
-     * Config -
      *
+     * Only works with PhpBrowser
+     * Example Config:
+     * ```yml
      * modules:
      *      enabled:
      *          - REST:
@@ -351,7 +351,8 @@ public function amNTLMAuthenticated($username, $password)
      *                  secret: accessSecret
      *                  service: awsService
      *                  region: awsRegion
-     *
+     * ```
+     * Code:
      * ```php
      * <?php
      * $I->amAWSAuthenticated();