Hot fix tutorial content

Author: hevilhuy

contents/tutorials/component-single-source-of-truth/v1/index.html

@@ -1,6 +1,4 @@
-<ul>
-    <li>Single Source of Truth</li>
-</ul>
+<h1>Single Source of Truth</h1>
 <p>In modern websites, some pieces of information may appear in multiple places, such as the profile avatar, the website language, theme, etc. One way to ensure data consistency and accuracy is to implement the Single Source of Truth (SSOT) pattern, which centralises all data instead of distributing it across multiple components. In this tutorial, we will go through:</p>
 <ul>
     <li>The need for a single source of truth.</li>