docs: update logos in README

Author: sapphi-red

README.md

@@ -1,8 +1,22 @@
 <p align="center">
+  <br>
+  <br>
   <a href="https://vite.dev/guide/rolldown.html" target="_blank" rel="noopener noreferrer">
-    <img width="180" src="https://vite.dev/logo.svg" alt="Vite logo">
-    <img width="180" src="https://rolldown.rs/rolldown-round.svg" alt="Rolldown logo">
+    <picture>
+      <source media="(prefers-color-scheme: dark)" srcset="https://rolldown.rs/rolldown-light.svg">
+      <source media="(prefers-color-scheme: light)" srcset="https://rolldown.rs/rolldown-dark.svg">
+      <img alt="rolldown logo" src="https://rolldown.rs/rolldown-dark.svg" height="60">
+    </picture>
+    <br>
+    <br>
+    <picture>
+      <source media="(prefers-color-scheme: dark)" srcset="https://vite.dev/vite-light.svg">
+      <source media="(prefers-color-scheme: light)" srcset="https://vite.dev/vite-dark.svg">
+      <img alt="vite logo" src="https://vite.dev/vite-dark.svg" height="60">
+    </picture>
   </a>
+  <br>
+  <br>
 </p>
 <br/>
 <p align="center">