fix: correct RGL and resizable example links

Author: STRML

example/index.html

@@ -11,8 +11,8 @@
   <header class="main-header">
     <h1>React-Draggable</h1>
     <div class="header-links">
-      <a class="lib-link" href="https://react-grid-layout.github.io/react-grid-layout/examples/0-showcase.html">React-Grid-Layout</a>
-      <a class="lib-link" href="https://react-grid-layout.github.io/react-resizable/examples/example.html">React-Resizable</a>
+      <a class="lib-link" href="https://react-grid-layout.github.io/react-grid-layout/examples/00-showcase.html">React-Grid-Layout</a>
+      <a class="lib-link" href="https://react-grid-layout.github.io/react-resizable/">React-Resizable</a>
       <a class="version-badge" href="https://github.com/react-grid-layout/react-draggable">v4.5.0</a>
     </div>
   </header>