Fixed assertion block to remove jinja2 delimiters

roles/custom/matrix-element-call/tasks/validate_config.yml

@@ -21,7 +21,7 @@
 - name: Validate that the Element Call hostname is properly formatted
   ansible.builtin.assert:
     that:
-      - "'{{ matrix_element_call_hostname }}' is match('^([a-zA-Z0-9][-a-zA-Z0-9]*[a-zA-Z0-9])$')"
+      - matrix_element_call_hostname is match('^([a-zA-Z0-9][-a-zA-Z0-9]*[a-zA-Z0-9])$')
     fail_msg: "The hostname '{{ matrix_element_call_hostname }}' is not valid. It should be a valid domain or subdomain."
     success_msg: "The hostname '{{ matrix_element_call_hostname }}' is valid."
 
@@ -76,4 +76,4 @@
   ansible.builtin.fail:
     msg: "The required configuration path '{{ item.path }}' does not exist or is not accessible."
   when: config_paths_check.results is defined and config_paths_check.results | selectattr('failed', 'eq', True) | list | length > 0
-  loop: "{{ config_paths_check.results | selectattr('failed', 'eq', True) | list }}"
+  loop: "{{ config_paths_check.results | selectattr('failed', 'eq', True) | list }}"