Update S3 client list (#432)

## Describe your PR

Update S3 client list to add WinSCP and correct filestash link.


## Checklist

- [x] My PR is related to an opened issue : #
- [x] I've read the [contributing
guidelines](/CleverCloud/documentation/blob/main/CONTRIBUTING.md)


## Reviewers
_Who should review these changes?_ @

Author: Kirbeerus

content/doc/addons/cellar.md

@@ -105,7 +105,10 @@ There are several ways to manage your buckets, find in this section a list of op
 Some clients allows you to upload files, list them, delete them, etc, like:
 
 - [Cyberduck](https://cyberduck.io)
-- [Filestash](https://filestash.app)
+- [Filestash](https://www.filestash.app/)
+- [MinIO](https://min.io/docs/minio/linux/reference/minio-mc.html)
+- [S3 Browser](https://s3browser.com/)
+- [WinSCP](https://winscp.net)
 
 This list isn't exhaustive. Feel free to [suggest other clients that you would like to see in this documentation](https://github.com/CleverCloud/documentation/discussions/new?category=general).