sidebar: add link to board page

Signed-off-by: James Calligeros <jcalligeros99@gmail.com>

Author: chadmed

mkdocs.yml

@@ -17,6 +17,7 @@ nav:
     - FAQ: project/faq.md
     - When will Asahi Linux be done?: project/when-will-asahi-be-done.md
     - References: project/references.md
+    - Asahi Linux Board: project/board/asahi-board.md
   - Platform documentation:
     - Apple Silicon Subsystems: platform/subsystems.md
     - Apple Platform Security Crash Course: platform/security.md