Fix instagram link

Author: nilesleesmith

docs/index.html

@@ -43,7 +43,7 @@ <h1>CutePetsBoston</h1>
         <a class="social-icon" href="https://mastodon.social/@cutepetsboston" target="_blank" rel="me noopener" aria-label="Mastodon">
           <svg aria-hidden="true" focusable="false"><use href="#icon-mastodon"/></svg>
         </a>
-        <a class="social-icon" href="https://www.instagram.com/cute.pets.boston/" target="_blank" rel="noopener" aria-label="Instagram">
+        <a class="social-icon" href="https://www.instagram.com/cutepetsboston/" target="_blank" rel="noopener" aria-label="Instagram">
           <svg aria-hidden="true" focusable="false"><use href="#icon-instagram"/></svg>
         </a>
         </nav>