[miniflux] Fix install method

lab/ansible/roles/miniflux/tasks/main.yml

@@ -5,7 +5,7 @@
     state: latest
 
 - name: Miniflux enabled
-  shell: sysrc miniflux_enable="YES"
+  shell: sysrc immortaldir_enable="YES"
   notify: Miniflux restarted
 
 - name: Miniflux config installed