Blog page tweaks (#2007)

Fix a couple of bits on an older blog post and add a newline on v4 blog
post to better separate CSS blocks

Author: brabli

src/app/(docs)/docs/installation/framework-guides/sveltekit.tsx

@@ -98,7 +98,7 @@ export let steps: Step[] = [
       lang: "svelte",
       code: html`
         <script>
-          let { children }  = $props();
+          let { children } = $props();
           // [!code highlight:2]
           import "../app.css";
         </script>

src/blog/tailwindcss-v3-2/index.mdx

@@ -737,7 +737,7 @@ module.exports = {
   theme: {
     extend: {
       containers: {
-        2xs: '16rem',
+        "2xs": "16rem",
         // etc...
       },
     },

src/blog/tailwindcss-v4/index.mdx

@@ -644,6 +644,7 @@ We've added a new `not-*` variant which finally adds support for the CSS `:not()
 .not-hover\:opacity-75:not(*:hover) {
   opacity: 75%;
 }
+
 @media not (hover: hover) {
   .not-hover\:opacity-75 {
     opacity: 75%;