Clarify /library/kolibri owner recommendation

roles/kolibri/tasks/install.yml

@@ -158,6 +158,9 @@
   become_user: "{{ kolibri_user }}"
   when: kolibri_provision
 
+# 2023-03-25: Likely overkill (let's strongly consider removing this stanza?)
+# Certainly, setting owner (recursively) is advised when moving /library/kolibri :
+# https://kolibri.readthedocs.io/en/latest/install/ubuntu-debian.html#changing-the-owner-of-kolibri-system-service
 - name: chown -R {{ kolibri_user }}:{{ apache_user }} {{ kolibri_home }} for good measure?
   file:
     path: "{{ kolibri_home }}"     # /library/kolibri