Take a quick look at the below links and see if any help.
From what i can tell, the guide you were referencing was for a different version of EAP (6.0):
I also tried to follow this guide but I get errors at the command line. See attached image.
The below links are for the latest version of EAP (6.4).
Also, based on the screenshot you provided, it looks like you're running standalone mode, but you're trying to issue a command for domain mode. Try removing "/host=master" from the beginning and just running the rest starting with "/core-service..."
Securing the Management Interfaces with LDAP:
EAP Operation Modes:
full doc list: