section-2: Move images to dedicated directory.

Author: owen-webb

starter/02-HTML-Fundamentals/challenges.jpg renamed to starter/02-HTML-Fundamentals/img/challenges.jpg

@@ -30,12 +30,12 @@ <h1>📘 The Code Magazine</h1>
         <h2>The Basic Language of the Web: HTML</h2>
         <img alt="Author."
               height="50"
-              src="laura-jones.jpg"
+              src="img/laura-jones.jpg"
               width="50"/>
         <p>Posted by <strong>Laura Jones</strong> on Monday, June 21st 2027</p>
         <img alt="HTML code on a screen."
               height="200"
-              src="post-img.jpg"
+              src="img/post-img.jpg"
               width="500"/>
       </header>