Match readme.md with website docs

readme.md

@@ -22,12 +22,17 @@ for which ever storage is right for you.
 * **[Flysystem API](https://flysystem.thephpleague.com/v2/docs/usage/filesystem-api/)**: How to interact with your Flysystem instance
 * **[Upgrade to V2](https://flysystem.thephpleague.com/v2/docs/advanced/upgrade-to-2.0.0/)**: How to upgrade your Flysystem V1 instance to V2
 
-### Commonly-Used Adapters
-
-* **[AsyncAws S3](https://flysystem.thephpleague.com/v2/docs/adapter/async-aws-s3/)**
-* **[AWS S3](https://flysystem.thephpleague.com/v2/docs/adapter/aws-s3-v3/)**
-* **[Local](https://flysystem.thephpleague.com/v2/docs/adapter/local/)**
-* **[Memory](https://flysystem.thephpleague.com/v2/docs/adapter/in-memory/)**
+### Officially supported adapters
+
+* **[Local](https://flysystem.thephpleague.com/docs/adapter/local/)**
+* **[FTP](https://flysystem.thephpleague.com/docs/adapter/ftp/)**
+* **[SFTP](https://flysystem.thephpleague.com/docs/adapter/sftp-v3/)**
+* **[Memory](https://flysystem.thephpleague.com/docs/adapter/in-memory/)**
+* **[AWS S3](https://flysystem.thephpleague.com/docs/adapter/aws-s3-v3/)**
+* **[AsyncAws S3](https://flysystem.thephpleague.com/docs/adapter/async-aws-s3/)**
+* **[Google Cloud Storage](https://flysystem.thephpleague.com/docs/adapter/google-cloud-storage/)**
+* **[Azure Blob Storage](https://flysystem.thephpleague.com/docs/adapter/azure-blob-storage/)**
+* **[WebDAV](https://flysystem.thephpleague.com/docs/adapter/webdav/)**
 
 ### Third party Adapters