Merge pull request #127309 from changeworld/patch-31

Fix typo: Perserve -> Preserve

Author: v-dirichards

articles/frontdoor/index.yml

@@ -60,7 +60,7 @@ landingContent:
             url: ../web-application-firewall/afds/waf-front-door-rate-limit.md
       - linkListType: architecture
         links:
-          - text: Perserve original HTTP hostname
+          - text: Preserve original HTTP hostname
             url: /azure/architecture/best-practices/host-name-preservation
           - text: Global routing redundancy for mission critical web applications
             url: /azure/architecture/guide/networking/global-web-applications/overview