Update Readme to resolve TS error solution (#167)

* Update README.md

* Create clever-radios-destroy.md

* Update README.md

---------

Co-authored-by: Cody Olsen <81981+stipsan@users.noreply.github.com>

Author: AidanLaycock

.changeset/clever-radios-destroy.md

@@ -0,0 +1,5 @@
+---
+"@portabletext/react": patch
+---
+
+Update Readme to include TS imports

README.md

@@ -172,9 +172,11 @@ const components: PortableTextComponents = {
 
 An object of React components that renders portable text blocks with different `style` properties. The object has the shape `{styleName: ReactComponent}`, where `styleName` is the value set in individual `style` attributes on blocks (`normal` being the default).
 
-```jsx
+```tsx
+import { PortableText, PortableTextReactComponents } from "@portabletext/react";
+
 // `components` object you'll pass to PortableText
-const components = {
+const components:Partial<PortableTextReactComponents> = {
   block: {
     // Ex. 1: customizing common block types
     h1: ({children}) => <h1 className="text-2xl">{children}</h1>,