feat:设置杠杆

@@ -223,7 +223,7 @@ class ExBroker
         return $this->api->getPositions($param);
         return $this->api->getPositions($param);
     }
     }
 
 
-    public function setLeverage($symbol, $leverage)
+    public function setLever($symbol, $leverage)
     {
     {
         $param = [
         $param = [
             'category' => 'linear',
             'category' => 'linear',