Update README.md

Change DotEnvFileReaderAdapter to DotEnvV2FileReaderAdapter in readme

README.md

@@ -59,7 +59,7 @@ EnvProviderDecorator::getEnv('TEST_ENV');
 
 /*
  * Pass as first param one of available HostDetectorInterface implementations which detect HostId for current request
- * Pass as second param one of available EnvFileReaderInterface (for now available only DotEnvFileReaderAdapter) which load specific env file
+ * Pass as second param one of available EnvFileReaderInterface (for now available only DotEnvV2FileReaderAdapter) which load specific env file
  * Pass as third param another EnvResolvingStrategy which find specific env variable from loaded envs
  */
 $strategy = new FileBasedEnvResolvingStrategy($hostDetector, $envFileReader, $envResolvingStrategy);
@@ -253,4 +253,4 @@ char __'-'__ to __'\_\'__ when you access to env variable
 
     // return 'originalEnvName_test_host_id'
     $formattedName = $formatter->formatName('originalEnvName', new HostId('test-host-id'));
-    ```
+    ```