Update test with more convincing data

Added some escaped slashes to demonstrate that they weren't "unescaped"
by the getContent function if the json isn't valid.

Author: Jaspaul

tests/Requests/VerifierTest.php

@@ -288,13 +288,13 @@ public function get_content_returns_the_raw_content_if_it_is_not_valid_json()
         {
             public function getContent($asResource = false)
             {
-                return '{';
+                return '"url":"http:\\/\\/google.com"';
             }
         };
 
         $verifier = new Verifier($request);
 
-        $this->assertSame('{', $verifier->getContent());
+        $this->assertSame('"url":"http:\\/\\/google.com"', $verifier->getContent());
     }
 
     /**