committing the toc for the 3rd use case

Signed-off-by: shanrajad23 <[email protected]>

src/toc-use-case.md

@@ -4,4 +4,5 @@ This is the table of contents from which the Tanzu Solution Workbooks Documentat
 
 - [Tanzu Solution Workbooks](./reference-designs/index-use-case.md)
     - [High Availability Failover in PostgreSQL backed by Tanzu](./reference-designs/postgres-sql.md)
-    - [Exposing TAP Workloads Outside the Cluster Using AVI L4/L7](./solution-workbooks/tap-workloads-avi-l4-l7.md)
+    - [Exposing TAP Workloads Outside the Cluster Using AVI L4/L7](./solution-workbooks/tap-workloads-avi-l4-l7.md)
+    - [Backing Up & Restoring VMware SQL with MySQL Instances for TAS](./solution-workbooks/backup-vmwaresql-tas.md)