chore: rename all &cx to cx, make clipppy happy

packages/fermi/README.md

@@ -44,7 +44,7 @@ From anywhere in our app, we can read our the value of our atom:
 
 ```rust, ignore
 fn NameCard(cx: Scope) -> Element {
-    let name = use_read(&cx, NAME);
+    let name = use_read(cx, NAME);
     cx.render(rsx!{ h1 { "Hello, {name}"} })
 }
 ```
@@ -53,7 +53,7 @@ We can also set the value of our atom, also from anywhere in our app:
 
 ```rust, ignore
 fn NameCard(cx: Scope) -> Element {
-    let set_name = use_set(&cx, NAME);
+    let set_name = use_set(cx, NAME);
     cx.render(rsx!{
         button {
             onclick: move |_| set_name("Fermi"),