Update facade docblocks

Author: taylorotwell

src/Illuminate/Support/Facades/DB.php

@@ -4,6 +4,7 @@
 
 /**
  * @method static \Illuminate\Database\Connection connection(string|null $name = null)
+ * @method static \Illuminate\Database\ConnectionInterface connectUsing(string $name, array $config, bool $force = false)
  * @method static void registerDoctrineType(string $class, string $name, string $type)
  * @method static void purge(string|null $name = null)
  * @method static void disconnect(string|null $name = null)