fix:self

@@ -61,7 +61,7 @@ class Application
 
             $app = $options ?: 'default';
 
-            $config = \config(TiktokShopProvider::$name . '.' . $app);
+            $config = \config(ServiceProvider::$name . '.' . $app);
 
             if (!is_array($config)) {
                 throw new \InvalidArgumentException('config file not found');
@@ -93,9 +93,9 @@ class Application
     /**
      * @param $options
      *
-     * @return TiktokShop
+     * @return Application
      */
-    public static function use($options = null): TiktokShop
+    public static function use($options = null): Application
     {
         return new static($options);
     }
@@ -103,9 +103,9 @@ class Application
     /**
      * @param string $accessToken
      *
-     * @return $this
+     * @return Application
      */
-    public function setAccessToken(string $accessToken): TiktokShop
+    public function setAccessToken(string $accessToken): Application
     {
         $this->config->setAccessToken($accessToken);