update asciidoc html files [skip ci] (#260)

Co-authored-by: timunie <47110241+timunie@users.noreply.github.com>

Author: github-actions[bot]

index.html

@@ -1949,7 +1949,6 @@ <h1>Avalonia <span class="image"><a class="image" href="https://www.avaloniaui.n
 <div id="content">
 <div id="preamble">
 <div class="sectionbody">
-<!-- toc disabled -->
 <div class="paragraph">
 <p>Welcome to <strong>Avalonia.Samples</strong>. This is a collection of minimal samples, which should make it easy for everyone to get started with <a href="https://www.avaloniaui.net" target="_blank" rel="noopener">Avalonia</a>. Each sample is focusing on only one aspect of Avalonia.</p>
 </div>
@@ -2418,7 +2417,7 @@ <h4 id="_adding_a_new_sample">Adding a new sample</h4>
 </div>
 <div id="footer">
 <div id="footer-text">
-Last updated 2026-02-27 15:13:45 UTC
+Last updated 2026-02-27 15:15:49 UTC
 </div>
 </div>
 </body>

src/Avalonia.Samples/CompleteApps/AdvancedToDoList/index.html

@@ -2149,6 +2149,23 @@ <h2 id="_before_we_start">Before we start</h2>
 <div class="sect1">
 <h2 id="_the_solution">The Solution</h2>
 <div class="sectionbody">
+<div class="admonitionblock tip">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-tip" title="Tip"></i>
+</td>
+<td class="content">
+<div class="paragraph">
+<p>We recommend to open the source code in parallel while going through this tutorial.</p>
+</div>
+<div class="paragraph">
+<p><a href="https://github.com/AvaloniaUI/Avalonia.Samples/tree/main/src/Avalonia.Samples/CompleteApps/AdvancedToDoList" target="_blank" rel="noopener">[Bring me to the source code]</a></p>
+</div>
+</td>
+</tr>
+</table>
+</div>
 <div class="sect2">
 <h3 id="_step_1_create_a_new_solution">Step 1: Create a new Solution</h3>
 <div class="admonitionblock note">
@@ -2267,9 +2284,6 @@ <h3 id="_step_2_create_a_shared_controls_library">Step 2: Create a Shared-Contro
 <div class="paragraph">
 <p>In addition, we will create some commonly used <code>Converter</code> and <code>Helper</code> classes.</p>
 </div>
-<div class="paragraph">
-<p>Please see the <a href="SharedControls/">[source-code]</a> for details and further explanations.</p>
-</div>
 </div>
 <div class="sect2">
 <h3 id="_step_3_implement_the_data_layer">Step 3: Implement the Data Layer</h3>
@@ -3035,7 +3049,7 @@ <h2 id="_see_it_in_action">See it in Action</h2>
 </div>
 <div id="footer">
 <div id="footer-text">
-Last updated 2026-02-27 15:00:30 UTC
+Last updated 2026-02-27 18:10:07 UTC
 </div>
 </div>
 </body>