Update tinygo docs

[ricochet]

TinyGo documentation needs to be updated to use the new wit-bindgen-go bindings. An easy way to spy when the bindings are old is that they will not be idiomatic, e.g. ExportsWasiHttp0_2_0_IncomingHandlerIncomingRequest package is in the API. Instead these should be converted first to use the component-sdk-go (like for cases for http, logging), and for config, changed to the bindgen, e.g. wasi.config.runtime.