Update Symfony.php: Renaming Doctrine2 -> Doctrine

Author: ThomasLandauer

src/Codeception/Module/Symfony.php

@@ -62,7 +62,7 @@
  * and [HttpKernel Component](https://symfony.com/doc/current/components/http_kernel.html) to emulate requests and test response.
  *
  * * Access Symfony services through the dependency injection container: [`$I->grabService(...)`](#grabService)
- * * Use Doctrine to test against the database: `$I->seeInRepository(...)` - see [Doctrine Module](https://codeception.com/docs/modules/Doctrine2)
+ * * Use Doctrine to test against the database: `$I->seeInRepository(...)` - see [Doctrine Module](https://codeception.com/docs/modules/Doctrine)
  * * Assert that emails would have been sent: [`$I->seeEmailIsSent()`](#seeEmailIsSent)
  * * Tests are wrapped into Doctrine transaction to speed them up.
  * * Symfony Router can be cached between requests to speed up testing.
@@ -118,7 +118,7 @@
  *     enabled:
  *         - Symfony:
  *             part: services
- *         - Doctrine2:
+ *         - Doctrine:
  *             depends: Symfony
  *         - WebDriver:
  *             url: http://example.com