Update index.html

Author: pycopath

index.html

@@ -36,8 +36,10 @@ <h1>About Me</h1>
 
     <a href="/HTML-Projects/a1/introduction.html">Introduction</a>
     <a href="./HTML-Projects/a2/little_prince.html">The Little Prince</a>
+    <a href="./HTML-Projects/a3/calculator.html">Calculator</a>
 </body>
 
 
 </html>
 
+