docs: fix testnet insight link in sidebar

Author: thephez

_templates/sidebar-main.html

@@ -243,7 +243,7 @@
                 <li class="toctree-l1"><a class="reference internal" href="docs/resources/repository-overview.html">Repository
                                 Overview</a></li>
                 <li class="toctree-l1"><a class="reference external" href="https://platform-explorer.com/">Platform Explorer</a></li>
-                <li class="toctree-l1"><a class="reference external" href="https://testnet-insight.dashevo.org/insight/">Testnet Block
+                <li class="toctree-l1"><a class="reference external" href="https://insight.testnet.networks.dash.org/insight/">Testnet Block
                                 Explorer</a></li>
                 <li class="toctree-l1"><a class="reference external" href="http://faucet.testnet.networks.dash.org/">Testnet
                                 Faucet</a></li>