Update HeatConduction2DFinWorker tutorial with links to example directory and enhance tutorial navigation

Author: nikoscham

index.html

@@ -212,9 +212,9 @@ <h2 id="tutorials"><a name="Tutorials"></a>Tutorials</h2>
         >
       </li>
       <li>
-        <a href="https://feascript.com/tutorials/HeatConduction2DFin.html" target="_blank"
-          >Heat conduction in a two-dimensional fin</a
-        >
+        Heat conduction in a two-dimensional fin: 
+        <a href="https://feascript.com/tutorials/HeatConduction2DFin.html" target="_blank">Standard version</a> | 
+        <a href="https://feascript.com/tutorials/HeatConduction2DFinWorker.html" target="_blank">Web Worker version</a>
       </li>
     </ul>
     <p>

tutorials/HeatConduction2DFinWorker.html

@@ -158,7 +158,12 @@ <h2>Web Worker Implementation</h2>
 
     <h2>Results</h2>
     <div id="orientation-message">
-      Cannot draw the results. Please turn your phone to horizontal position to see the results.
+      Cannot draw the results. Please turn your phone to horizontal position to see the results. You can find a minimal example of this tutorial in the
+      <a
+        href="https://github.com/FEAScript/FEAScript-core/tree/main/examples/solidHeatTransferScript/HeatConduction2DFin"
+        target="_blank"
+        >example directory</a
+      >.
     </div>
     <div id="solutionPlot"></div>