Update docker.io/library/postgres Docker tag to v16

docs/guides/update-dokuwiki.md

@@ -1,27 +0,0 @@
----
-title: Updating Dokuwiki
----
-
-!!! success "Goal"
-
-    How to update our wiki (<https://wiki.hamburg.ccc.de>) to the latest version
-
-## 1. Create a Snaphot
-
-Go to the Chaosknoten Proxmox UI and create a snapshot of the `wiki` VM: <https://chaosknoten.hamburg.ccc.de:8006/#v1:0:=qemu%2F127:4:::::29::>
-
-## 2. Update Plugins
-
-- Go to the wiki's extension manager: <https://wiki.hamburg.ccc.de/start?do=admin&page=extension> or go to Admin > Extension Manager
-- Update the "DokuWiki Upgrade Plugin" (if it has updates)
-- Update other plugins while we're here already
-
-## 3. Update Dokuwiki
-
-- Go to the Wiki Upgrade: <https://wiki.hamburg.ccc.de/start?do=admin&page=upgrade> or go to Admin > Wiki Upgrade
-- Click through the steps. Note: Disabling any plugins before the upgrade was not necessary in the past.
-
-## Closing Up
-
-Log out and back in again to verify that the Keycloak connection still works.
-Maybe browse some pages as check if anything is obviously broken.