style 💎: Fix typo in hostname variable

Corrected the typo in the `addc_hostname` variable to ensure correct host selection for LXC provisioning.

tasks/setupacdc.yml

@@ -79,6 +79,6 @@
     #     ansible_user: root
 
 - name: Provision inside {{ addc_hostname }} LXC
-  hosts: "{{ addc_hostname }}"
+  hosts: "{{ addc_hostname | lower }}"
   gather_facts: false
   become: true