Merge pull request #1002 from MicrosoftDocs/DebLanger-patch-2

Update TOC.yml with EASM link

Author: DebLanger

exposure-management/TOC.yml

@@ -69,4 +69,6 @@
       - name: Defender for Cloud
         href: /azure/defender-for-cloud
       - name: Entra
-        href: /entra/
+        href: /entra/
+      - name: Defender External Attack Surface Management
+        href: /azure/external-attack-surface-management/