Resolve "How to auto update apps"

Closes #34 (closed)

tasks/apps.yml

@@ -33,11 +33,11 @@
     loop_var: ynh_app
   when: ynh_app.label not in ynh_installed_apps.values()
 
-- name: Creates a cron file under /etc/cron.daily to auto-update Yunohost everyday
+- name: Creates a cron file under /etc/cron.d to auto-update Yunohost everyday
   ansible.builtin.cron:
-    name: "auto-update Yunohost everyday at 12.
+    name: "auto-update Yunohost everyday.
            Logs can be found in /var/log/yunohost/categories/operation"
-    hour: "12"
+    special_time: "daily"
     user: root
     job: "yunohost tools update && \
           yunohost tools upgrade system && \