Fix Raygun docblock copy-paste reference

The property comment incorrectly referenced AppSignal's setup path. Updated to reference Raygun's correct API-key location.

Author: lohanidamodar

src/Logger/Adapter/Raygun.php

@@ -18,7 +18,7 @@ class Raygun extends Adapter
     private const DEFAULT_CONNECT_TIMEOUT = 1;
 
     /**
-     * @var string (required, can be found in Appsignal -> Project -> App Settings -> Push & deploy -> Push Key)
+     * @var string (required, can be found in your Raygun application settings)
      */
     protected string $apiKey;