Rename variable (matrix_user_groupname -> matrix_group_name)

roles/custom/matrix-base/tasks/setup_matrix_user.yml

@@ -7,7 +7,7 @@
 
 - name: Ensure Matrix group is created
   ansible.builtin.group:
-    name: "{{ matrix_user_groupname }}"
+    name: "{{ matrix_group_name }}"
     gid: "{{ omit if matrix_user_gid is none else matrix_user_gid }}"
     state: present
     system: "{{ matrix_group_system }}"
@@ -18,7 +18,7 @@
     name: "{{ matrix_user_name }}"
     uid: "{{ omit if matrix_user_uid is none else matrix_user_uid }}"
     state: present
-    group: "{{ matrix_user_groupname }}"
+    group: "{{ matrix_group_name }}"
     home: "{{ matrix_base_data_path }}"
     create_home: false
     system: "{{ matrix_user_system }}"