Update TOC.yml

Author: danielledennis

articles/external-attack-surface-management/TOC.yml

@@ -1,4 +1,4 @@
-- name: Concepts
+ew- name: Concepts
   expanded: true
   items:
   - name: Overview
@@ -51,5 +51,5 @@
   - name: Discovering your attack surface
     href: discovering-your-attack-surface.md
 - name: Integrations
-  - name: Security Copilot and Defender EASM
+  - name: Security Copilot (preview) and Defender EASM
   - href: easm-copilot.md