docs: fix typo on quickstart (#1519)

Author: jakehobbs

docs/pages/react/quickstart.mdx

@@ -141,7 +141,7 @@ The only thing left to do is to create a global.css file and import it in the ro
 For more on tailwind setup, see these [steps](https://tailwindcss.com/docs/installation/using-postcss).
 
 <Tip>
-**Already using tailwind v3?**
+**Still using tailwind v3?**
 
 If you're still using tailwind v3, don't fret. Account Kit is still fully compatible. Just skip the above tailwind setup steps since you've already set it up.
 
@@ -229,7 +229,7 @@ The [**demo app**](https://demo.alchemy.com/) provides an interactive sandbox to
 
 **Remember to paste in your API Key from step 2**
 
-```ts [src/config.ts]
+```ts twoslash [src/config.ts]
 // @noErrors
 import { createConfig, cookieStorage } from "@account-kit/react";
 import { QueryClient } from "@tanstack/react-query";

site/pages/react/quickstart.mdx

@@ -141,7 +141,7 @@ The only thing left to do is to create a global.css file and import it in the ro
 For more on tailwind setup, see these [steps](https://tailwindcss.com/docs/installation/using-postcss).
 
 :::tip
-**Already using tailwind v3?**
+**Still using tailwind v3?**
 
 If you're still using tailwind v3, don't fret. Account Kit is still fully compatible. Just skip the above tailwind setup steps since you've already set it up.
 :::
@@ -224,7 +224,7 @@ The [**demo app**](https://demo.alchemy.com/) provides an interactive sandbox to
 
 **Remember to paste in your API Key from step 2**
 
-```ts [src/config.ts]
+```ts twoslash [src/config.ts]
 // @noErrors
 import { createConfig, cookieStorage } from "@account-kit/react";
 import { QueryClient } from "@tanstack/react-query";