Fix default env undecoded topic and doc changes (#1227)

* Fix default env undecoded topic

as BTtoMQTT is not automatically added

* Fix links and doc

docs/.vuepress/config.js

@@ -31,7 +31,8 @@ module.exports = {
         { text: 'Community', link: 'https://community.openmqttgateway.com', target:'_self', rel:''},
         { text: 'Devices', link: 'https://compatible.openmqttgateway.com/index.php/devices', target:'_self', rel:''},
         { text: 'Boards', link: 'https://compatible.openmqttgateway.com/index.php/boards', target:'_self', rel:''},
-        { text: 'Upload', link: '/upload/web-install.html'}
+        { text: 'Upload', link: '/upload/web-install.html'},
+        { text: 'BLE2MQTT for servers', link: 'https://gateway.theengs.io/'}
       ],
       sidebar: [
         ['/','0 - What is it for 🏠'],