Add placeholder alt text for all images.

pages/about.php

@@ -9,7 +9,7 @@
 		<div class="row">
 			<h1 class="col-12 title">Who Am I?</h1>
 			<div class="col-12 header center" >
-				<img src="/files/media/icons/about.jpg" alt="">
+				<img src="/files/media/icons/about.jpg" alt="<<about.jpg>>">
 			</div>
 		</div>
 		<div class="row">