- Fixed PDO return value of connect() in mssql

src/Adapter/MsSQL.php

@@ -83,7 +83,7 @@ class MsSQL implements AdapterInterface, MigrateInterface, SqlAdapterInterface {
         }
     }
 
-    public function connect() : Pdo
+    public function connect() : \PDO
     {
         try {
             $pdo = new Pdo\Mssql($this->buildDataSourceName(), $this->username, $this->password);