Update file mkdocs.yml

mkdocs.yml

@@ -193,7 +193,7 @@ nav:
         - NFV API: ./architecture/nfvapi.md
       - Issue management: ./architecture/issuemgt.md
       - Central logging: ./architecture/centrallog.md
-  - Contributing to OSL:
-    - Developing: ./contributing/developing.md
-    - Documenting: ./contributing/documenting.md
+  - Contribute:
+    - Developing: ./contribute/developing.md
+    - Documenting: ./contribute/documenting.md
   - Terminology: terminology.md