Update example of HttpListenerResponse.StatusCode

[f00f]

Summary

The example given on the docs page of HttpListenerResponse.StatusCode is unrelated to the property described on said page.

I updated it to match the example given on HttpListenerResponse.StatusDescription, because that one covers the StatusCode property, too.

Note that this is the first time I'm referencing a snippet and I hope I found the correct way of doing it. If not please update the example on the StatusCode page to be the same as the one for StatusDescription.

[mairaw]

Good catch @f00f! Thanks for making the change.