improve ansible-all-hosts.sh related docs/configuring-playbook.md

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

docs/configuring-playbook.md

@@ -18,7 +18,7 @@ You can then follow these steps inside the playbook directory:
 
 1. edit the inventory hosts file (`inventory/hosts`) to your liking
 
-1. if you want to run multiple servers with different credentials, you can copy the sample inventory hosts yaml file for each of your hosts: (`cp examples/host.yml inventory/my_host1.yml` …) and use the [`ansible-all-hosts.sh`](inventory/scripts/ansible-all-hosts.sh) script [in then next step](installing.md).
+1. (optional, advaned) to run Ansible against multiple servers with different `sudo` credentials, you can copy the sample inventory hosts yaml file for each of your hosts: (`cp examples/host.yml inventory/my_host1.yml` …) and use the [`ansible-all-hosts.sh`](../inventory/scripts/ansible-all-hosts.sh) script [in then installation step](installing.md).
 
 For a basic Matrix installation, that's all you need.
 For a more custom setup, see the [Other configuration options](#other-configuration-options) below.