Fix broken links, progress #207

Author: richelbilderbeek

docs/sessions/unused/issues/issues.md

@@ -236,7 +236,7 @@ Issues are useful to communicate:
 
 However, an issue tracker is not designed to
 communicate what is _actively_ being worked on.
-For that, a [kanban board](kanban_board.md) is used instead.
+For that, a kanban board is used instead.
 
 ## 7. References
 

mkdocs.yaml

@@ -337,6 +337,7 @@ not_in_nav: |
   reflections/2025_summer/20250508.md
   reflections/2025_summer/20250509.md
   reflections/2025_summer/README.md
+  sessions/unused/issues/issues.md
   sessions/unused/issues/kanban_board.md
   sessions/project_start/spring2024/startup.md
   shared_documents/2023_autumn/day_1.md