fix: fix "get started" example

[ketronix-dev]

Same fixes, as in website PR

[CypherPotato]

I think we can keep the using app syntax that you used in this code, because I really like it. Even though leaving the HttpRequest parameter explicit, as I mentioned in the previous PR, it won't be necessary.

Do you agree that it would be better if we left the parameter implicit?

[ketronix-dev]

If we leave parameter explicit, JetBrains Rider shows error on this code, and we need to setup a type of delegate and request

[CypherPotato]

As I mentioned in the other PR, the -rc, -beta versions are not final and are subject to change their final API before release. If you use the latest stable version (1.2 in this moment), I'm pretty sure Rider will compile with the implicit parameter.