feat: amazingly awesome error handling

docs/main-concepts/02-hello.md

@@ -82,7 +82,7 @@ fn main() {
     dioxus::web::start(App)
 }
 
-fn App(cx: Context<()>) -> VNode {
+fn App(cx: Context<()>) -> DomTree {
     cx.render(rsx! {
         div { "Hello, world!" }
     })
@@ -108,7 +108,7 @@ fn main() {
 Finally, our app. Every component in Dioxus is a function that takes in a `Context` object and returns a `VNode`.
 
 ```rust
-fn App(cx: Context<()>) -> VNode {
+fn App(cx: Context<()>) -> DomTree {
     cx.render(rsx! {
         div { "Hello, world!" }
     })