Fix: Remove play button from guide example (#1118)

* fix: Remove play button from guide example

* Update index.md

* update other examples

docs/guide/src/en/__unused/memoization.md

@@ -1,11 +1,10 @@
-
 ## Memoization
 
 Dioxus uses Memoization for a more efficient user interface. Memoization is the process in which we check if a component actually needs to be re-rendered when its props change. If a component's properties change but they wouldn't affect the output, then we don't need to re-render the component, saving time!
 
 For example, let's say we have a component that has two children:
 
-```rust
+```rust, no_run
 fn Demo(cx: Scope) -> Element {
     // don't worry about these 2, we'll cover them later
     let name = use_state(cx, || String::from("bob"));
@@ -25,4 +24,3 @@ Dioxus memoizes owned components. It uses `PartialEq` to determine if a componen
 > This means you can always rely on props with `PartialEq` or no props at all to act as barriers in your app. This can be extremely useful when building larger apps where properties frequently change. By moving our state into a global state management solution, we can achieve precise, surgical re-renders, improving the performance of our app.
 
 Borrowed Props cannot be safely memoized. However, this is not a problem – Dioxus relies on the memoization of their parents to determine if they need to be rerendered.
-