Merge pull request #295633 from duongau/patch-12

Azure Firewall - TOC (fixed spelling mistake)

Author: Stacyrch140

articles/firewall/toc.yml

@@ -11,7 +11,7 @@ items:
     href: choose-firewall-sku.md
   - name: Preview features
     href: firewall-preview.md
-- name: Design & achitecture
+- name: Design & architecture
   items:
   - name: Policy 
     items: