docs(demo): Update readme for nextjs

Author: ntucker

examples/nextjs/README.md

@@ -6,11 +6,9 @@ First, run the development server:
 
 ```bash
 npm run dev
-# or
-yarn dev
 ```
 
-Open [http://localhost:3000](http://localhost:3000) with your browser to see the result.
+Open [http://localhost:3000](http://localhost:3000) to see the result.
 
 ## Stackblitz