Update mkdocs.yml

mkdocs.yml

@@ -81,7 +81,8 @@ nav:
       - Job Priority: general/job-priority.md
       - Job Submission and Execution: general/job-submission-and-execution.md
       - Capacity Computing:
-        - Capacity Computing: general/capacity-computing.md
+        - Introduction: general/capacity-computing.md
+        - Job Arrays: general/job-arrays.md
         - HyperQueue: general/hyperqueue.md
         - MPI on Karolina: general/karolina-mpi.md
       - Vnode Allocation: general/vnode-allocation.md