website/docs: ensure yaml code blocks have language tags (#9240)

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

website/docs/providers/ldap/generic_setup.md

@@ -74,14 +74,14 @@ Test connectivity by using ldapsearch.
 :::info
 ldapsearch can be installed on Linux system with these commands
 
-```
+```shell
 sudo apt-get install ldap-utils -y # Debian-based systems
 sudo yum install openldap-clients -y # CentOS-based systems
 ```
 
 :::
 
-```
+```shell
 ldapsearch \
   -x \
   -H ldap://<LDAP Outpost IP address>:<Port number 389> \ # In production it is recommended to use SSL, which also requires `ldaps://` as the protocol and the SSL port