Update 23_main_footer.html

Author: sonnynomnom

4-semantic-html/23_main_footer.html

@@ -17,7 +17,7 @@ <h1>My Blog</h1>
         </ul>
       </nav>
     </header>
-    <!-- From exercise 23 -->
+    <!-- From Exercise 23 -->
     <br/>
     <main>
       <h2>My Personal Blog</h2>