[MySQL] Correct line 133 in TOC from PostgreSQL to MySQL

Author: markingmyname

articles/mysql/TOC.yml

@@ -130,7 +130,7 @@
   - name: Integrations
     items:
     - name: Azure advisor
-      href: ../postgresql/single-server/concepts-azure-advisor-recommendations.md
+      href: ../mysql/single-server/concepts-azure-advisor-recommendations.md
     - name: Azure Data factory
       href: ../data-factory/connector-azure-database-for-mysql.md
   - name: Tutorials