Clarify ZBT-1 text

Author: balloob

src-11ty/home-assistant-connect-zbt-1/install.njk

@@ -29,8 +29,8 @@ hero: |
     </div>
     <div class="warning-content">
       <div class="warning-title">
-        Firmware update through web flasher is only available for Home
-        Assistant SkyConnect devices and Home Assistant ZBT-1 devices
+        Firmware update through web flasher is available for all Home
+        Assistant SkyConnect devices, and for Home Assistant ZBT-1 devices
         purchased after October 20, 2024.
       </div>
     </div>