fix: tipjar link (#8)

Author: motorina0

index.html

@@ -146,7 +146,7 @@
                     <a href="https://news.lnbits.com/" title="LNbits news">News</a>
                   </li>
                   <li class="nav-item">
-                    <a href="https://demo.lnbits.com/tipjar/4">Support
+                    <a href="https://demo.lnbits.com/tipjar/DwaUiE4kBX6mUW6pj3X5Kg">Support
                       💕</a>
                   </li>
                 </ul>

index_es.html

@@ -104,7 +104,7 @@
                     <a href="https://news.lnbits.com/" title="Noticias de LNbits">Noticia</a>
                   </li>
                   <li class="nav-item">
-                    <a  href="https://demo.lnbits.com/tipjar/4">Soporte
+                    <a  href="https://demo.lnbits.com/tipjar/DwaUiE4kBX6mUW6pj3X5Kg">Soporte
                       💕</a>
                   </li>
                 </ul>