Added missing parenthesis

Author: mikebronner

src/LaravelMixpanel.php

@@ -42,7 +42,7 @@ public function track($event, $properties = [])
         $deviceInfo = new Device();
         $browserVersion = trim(str_replace('unknown', '', $browserInfo->getName() . ' ' . $browserInfo->getVersion()));
         $osVersion = trim(str_replace('unknown', '', $osInfo->getName() . ' ' . $osInfo->getVersion()));
-        $hardwareVersion = trim(str_replace('unknown', '', $deviceInfo->getName());
+        $hardwareVersion = trim(str_replace('unknown', '', $deviceInfo->getName()));
         $data = [
             'Url' => $this->request->getUri(),
             'Operating System' => $osVersion,