chore: update URLs in README.md and header

README.md

@@ -1,18 +1,18 @@
 # 🛝 Yjs Playground
 
-[![Build](https://github.com/lawvs/yjs-playground/actions/workflows/build.yml/badge.svg)](https://github.com/lawvs/yjs-playground/actions/workflows/build.yml)
+[![Build](https://github.com/yjs/yjs-playground/actions/workflows/build.yml/badge.svg)](https://github.com/yjs/yjs-playground/actions/workflows/build.yml)
 
 The playground of [Yjs](https://docs.yjs.dev/).
 
 ## ✨ Features
 
 - Connect to a Yjs demo.
-  ![image](https://github.com/lawvs/yjs-playground/assets/18554747/dfc81707-eaf8-40f4-8f24-8264056a7fe6)
+  ![image](https://github.com/yjs/yjs-playground/assets/18554747/b5d81ae5-13de-4852-a598-2c1a7b2409a3)
 - Inspect the Yjs document model
-  ![image](https://github.com/lawvs/yjs-playground/assets/18554747/edb040f2-6bdd-4c2a-b9cf-43f7eaef08d2)
+  ![image](https://github.com/yjs/yjs-playground/assets/18554747/edb040f2-6bdd-4c2a-b9cf-43f7eaef08d2)
 
 - Edit the Yjs document model.
-  ![image](https://github.com/lawvs/yjs-playground/assets/18554747/46a061e9-3466-46bd-91cc-80e80476de37)
+  ![image](https://github.com/yjs/yjs-playground/assets/18554747/46a061e9-3466-46bd-91cc-80e80476de37)
 
 - Export the YDoc snapshot
 - Dark mode

src/components/site-header.tsx

@@ -30,7 +30,7 @@ export function Header() {
         <ModeToggle />
         <Button variant="ghost" size="icon" asChild>
           <a
-            href="https://github.com/lawvs/yjs-playground"
+            href="https://github.com/yjs/yjs-playground"
             target="_blank"
             rel="noopener noreferrer"
           >