finish server function docs

docs/guide/examples/hydration_props.rs

@@ -31,11 +31,11 @@ fn main() {
                             // Render the application. This will serialize the root props (the intial count) into the HTML
                             .route(
                                 "/",
-                                get(move |Path(intial_count): Path<usize>, State(ssr_state): State<SSRState>| async move { axum::body::Full::from(
+                                get(move | State(ssr_state): State<SSRState>| async move { axum::body::Full::from(
                                     ssr_state.render(
                                         &ServeConfigBuilder::new(
                                             app,
-                                            intial_count,
+                                            0,
                                         )
                                         .build(),
                                     )