doc.md

@@ -11,6 +11,8 @@ one of the following quick links instead:
  * [GitLab](howto/gitlab)
  * [Nextcloud](service/nextcloud)
 
+Other documentation:
+
 <!-- update with `ls -d doc/*.md | sed 's/.md$//;s/\(.*\)/ * [\1](doc\/\1)/'` -->
 
  * [accounts](doc/accounts)