Review formatting

Author: AliveDevil

protocols/sftp/index.md

@@ -112,10 +112,10 @@ OpenSSH private keys of type `rsa`, `dsa`, `ecdsa` and `ed25519` (in OpenSSL `PE
 
 ##### OpenSSH User Certificate Authentication
 
-:::{important}
+```{important}
 * Cyberduck [8.9.0](https://cyberduck.io/changelog/) or later required
 * Mountain Duck [4.16.0](https://mountainduck.io/changelog/) or later required
-:::
+```
 
 Applies to SSH servers, which are configured with [`TrustedUserCAKeys`](https://man.openbsd.org/sshd_config#TrustedUserCAKeys), refer to your software vendor for configuration. To configure authentication with a User CA signed private key, configure the private key as described in [Configure Public Key Authentication](#configure-public-key-authentication) step 3. The signed public key file _must_ reside next to the private key file, suffixed `-cert.pub` or `.pub`. The [`CertificateFile`](https://man.openbsd.org/ssh_config#CertificateFile) configuration directive in `~/.ssh/config` is not supported. Pay attention to the server configuration and [`PubkeyAcceptedAlgorithms`](https://man.openbsd.org/sshd_config#PubkeyAcceptedAlgorithms) specifically which determines the allowed private key algorithms to authenticate with.