Update mkdocs.yml

Author: saildot4k

mkdocs.yml

@@ -133,7 +133,7 @@ nav:
     - Video Tutorials: ghost2/ghost2-vids.md
     - Written Tutorials: ghost2/ghost2-writeups.md
     - Team Files: ghost2/ghost2-files.md
-    - Archived Website: ghost2/ghost2-archived
+    - Archived Website: ghost2/ghost2-archived.md
   - Matrix Infinity and clones:
     - mi/mi-index.md
     - Install Diagrams: mi/mi-install.md