Update mkdocs.yml

mkdocs.yml

@@ -87,7 +87,8 @@ nav:
       - Parallel Computing and MPI: general/karolina-mpi.md
       - Vnode Allocation: general/vnode-allocation.md
       - Migrating from SLURM: general/slurmtopbs.md
-    - Other Services: general/opencode.md  
+    - Other Services:
+        - OpenCode: general/opencode.md  
     - Technical Information:
       - SSH Keys:
         - OpenSSH Keys (UNIX): general/accessing-the-clusters/shell-access-and-data-transfer/ssh-keys.md