update toc

Author: halkazwini

articles/network-watcher/toc.yml

@@ -183,6 +183,8 @@
     href: traffic-analytics-schema.md
   - name: Use queries in traffic analytics
     href: traffic-analytics-queries.md
+  - name: Rules impact analyzer
+    href: traffic-analytics-rule-impact-analyzer.md
   - name: Integrate Microsoft Sentinel with traffic analytics
     href: traffic-analytics-sentinel.md
   - name: Apply Zero Trust principles to segment Azure network