Update HttpResponse.xml (dotnet#1207)

Author: Rick Anderson

xml/System.Web/HttpResponse.xml

@@ -3279,7 +3279,7 @@ Response.RedirectToRoutePermanent("Product",
           <format type="text/markdown"><![CDATA[  
   
 ## Remarks  
- The <xref:System.Web.HttpResponse.TrySkipIisCustomErrors%2A> property is used only when your application is hosted in IIS 7.0. When running in Classic mode in IIS 7.0 the <xref:System.Web.HttpResponse.TrySkipIisCustomErrors%2A> property default value is `true`. When running in Integrated mode, the <xref:System.Web.HttpResponse.TrySkipIisCustomErrors%2A> property default value is `false`.  
+ The <xref:System.Web.HttpResponse.TrySkipIisCustomErrors%2A> property is used only when your application is hosted in IIS 7.0 and later. When running in Classic mode, the <xref:System.Web.HttpResponse.TrySkipIisCustomErrors%2A> property default value is `true`. When running in Integrated mode, the <xref:System.Web.HttpResponse.TrySkipIisCustomErrors%2A> property default value is `false`.  
   
  ]]></format>
         </remarks>
@@ -3691,4 +3691,4 @@ Response.RedirectToRoutePermanent("Product",
       </Docs>
     </Member>
   </Members>
-</Type>
+</Type>