fix the db location

apps/todos/values.yaml

@@ -34,6 +34,10 @@ api:
             frontendUrl: https://todos.kluster.moll.re
           database:
             type: sqlite
+            # The path to the database file.
+            # This is the default value, you can change it if you want to.
+            # sqlite:
+            path: app/vikunja/files/vikunja.db
           registration: false
   env: