Add additional links to documentation

Author: b-studios

scala3doc/scala3-docs/index.html

@@ -80,5 +80,14 @@ <h1 id="getting-started-with-a-project">Create a Scala 3 Project</h1>
       <pre><code>sbt new <a href="https://github.com/lampepfl/dotty-cross.g8">lampepfl/dotty-cross.g8</a></code></pre>
 
       <p>For documentation see the <a href="https://github.com/lampepfl/dotty-example-project">Scala 3 Example Project</a>.</p>
+
+      <h1 id="documentation">Learn more about Scala 3</h1>
+      <p>You can find much more information about Scala 3 in ...</p>
+      <ul>
+        <li>... the <a href="https://docs.scala-lang.org/scala3/">Scala 3 documentation</a>,</li>
+        <li>... the <a href="https://docs.scala-lang.org/scala3/scala3-book">Scala 3 book</a>,</li>
+        <li>... the <a href="docs/index.html">Scala 3 reference docs</a>,</li>
+        <li>... the <a href="https://docs.scala-lang.org/scala3/guides.html">Scala 3 guides</a>.</li>
+      </ul>
   </div>
 </section>