add uzx.

Author: Junze888

_includes/nav.html

@@ -71,6 +71,7 @@
                         <a class="dropdown-item" href="https://www.mexc.com/exchange/XDAG_USDT" target="_blank">MEXC</a>
                         <a class="dropdown-item" href="https://www.uubiter.com/spot/#/index/xdag_usdt" target="_blank">UUBiter</a>
                         <a class="dropdown-item" href="https://bikingex.com/spot/trade-spot/XDAG_USDT" target="_blank">BiKing</a>
+                        <a class="dropdown-item" href="https://uzx.com/#/exchange/xdag_usdt" target="_blank">UZX</a>
                         <a class="dropdown-item" href="https://nonkyc.io/asset/XDAG" target="_blank">NonKYC</a>
                         <a class="dropdown-item" href="https://xeggex.com/market/XDAG_USDT" target="_blank">XeggeX</a>
 <!--                        <a class="dropdown-item" href="https://p2pb2b.com/trade/XDAG_BUSD" target="_blank">P2B</a>-->