Add detailed instructions to the VTX Table (#1644)

Add detailed instructions to the VTX Table

Author: mikeller

locales/en/messages.json

@@ -4935,7 +4935,7 @@
     },
 
     "vtxHelp": {
-        "message": "Here you can configure the values for your Video Transmitter (VTX). You can view and change the transmission values, including the VTX Tables, if the flight controller and VTX support it",
+        "message": "Here you can configure the values for your Video Transmitter (VTX). You can view and change the transmission values, including the VTX Tables, if the flight controller and the VTX support it.<br>To set up your VTX use the following steps:<br>1. Go to <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https://github.com/betaflight/betaflight/wiki/VTX-tables\">this</a> page;<br>2. Find the appropriate VTX configuration file for your country and your VTX model and download it;<br>3. Click '$t(vtxButtonLoadFile.message)' below, select the VTX configuration file, load it;<br>4. Verify that the settings are correct;<br>5. Click '$t(vtxButtonSave.message)' to store the VTX settings on the flight controller.",
         "description": "Introduction message in the VTX tab"
     },
     "vtxMessageNotSupported": {

src/tabs/vtx.html

@@ -8,7 +8,7 @@
             </div>
         </div>
 
-        <div class="note">
+        <div class="note vtx_supported">
             <p i18n="vtxHelp"/>
         </div>