fix typo

Author: rboucher

articles/azure-monitor/toc.yml

@@ -1096,7 +1096,7 @@
       href: platform/metrics-supported.md
     - name: Supported metrics for newer alerts
       href: platform/alerts-metric-near-real-time.md
-  - name: Resource log ervices, categories, and schemas
+  - name: Resource log services, categories, and schemas
     href: platform/diagnostic-logs-schema.md
   - name: Azure CLI
     href: /cli/azure/monitor?view=azure-cli-latest