set requireSsl and requireHttps to true (#6563)

Author: mairaw

docs/framework/security/how-to-build-claims-aware-aspnet-web-forms-app-using-wif.md

@@ -116,8 +116,8 @@ manager: "mbaldwin"
     </system.identityModel>  
     <system.identityModel.services>  
         <federationConfiguration>  
-            <cookieHandler requireSsl="false" />  
-            <wsFederation passiveRedirectEnabled="true" issuer="http://localhost:13922/wsFederationSTS/Issue" realm="http://localhost:28503/" reply="http://localhost:28503/" requireHttps="false" />  
+            <cookieHandler requireSsl="true" />  
+            <wsFederation passiveRedirectEnabled="true" issuer="http://localhost:13922/wsFederationSTS/Issue" realm="http://localhost:28503/" reply="http://localhost:28503/" requireHttps="true" />  
         </federationConfiguration>  
     </system.identityModel.services>  
     ```