Merge pull request #295760 from greg-lindsay/appgw-freshness

add detail about wildcard

Author: prmerger-automator[bot]

articles/application-gateway/multiple-site-overview.md

@@ -4,7 +4,7 @@ description: This article provides an overview of the Azure Application Gateway
 services: application-gateway
 author: greg-lindsay
 ms.service: azure-application-gateway
-ms.date: 02/28/2024
+ms.date: 03/05/2025
 ms.author: greglin
 ms.topic: concept-article
 ---
@@ -75,6 +75,7 @@ In the Azure portal, under the multi-site listener, you must choose the **Multip
 * There can only be up to two asterisks `*` in a host name. For example, `*.contoso.*` is valid and `*.contoso.*.*.com` is invalid.
 * There can only be a maximum of 4 wildcard characters in a host name. For example, `????.contoso.com`, `w??.contoso*.edu.*` are valid, but `????.contoso.*` is invalid.
 * Using asterisk `*` and question mark `?` together in a component of a host name (`*?` or `?*` or `**`) is invalid. For example, `*?.contoso.com` and `**.contoso.com` are invalid.
+* An entry of `*.contoso.com` does not match `contoso.com` because `*.contoso.com` specifies that a dot is present before contoso.
 
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