Update README.md

README.md

@@ -102,7 +102,7 @@ The prompts `#` show that you are working at root.
 * For the host with the hostname `lasXXX.las.kit.edu` do the following
 * edit a file ``host_vars/lasXXX.las.kit.edu``
 ```
-las126# ansible-playbook -l lasXXX.las.kit.edu add_ipa_host.yml -k --vault-id @prompt
+las126# ansible-playbook -l lasXXX.las.kit.edu add_ipa_host.yml --vault-id @prompt
 ```
 and provide the root password for the new host.