Change default org-ql query for db/org-backlinks to `(not (done))`

Using `(todo)` (the previous default) excluded NOTEs and TOPICs (among others)
which I am usually interested in.

site-lisp/db-org.el

@@ -1129,7 +1129,7 @@ PARAMS may contain the following values:
   (interactive)
   (org-create-dblock
    (list :name "db/org-backlinks"
-         :org-ql-match '(todo)
+         :org-ql-match '(not (done))
          :parent-depth nil
          :archives nil))
   (org-update-dblock))