Updated reference to manifest.json. Fixes ##34140 (#34163)

source/voice_control/thirteen-usd-voice-remote.markdown

@@ -45,7 +45,7 @@ Before you can use this device with Home Assistant, you need to install a bit of
    - Select the **Connect** button below. If your browser does not support web serial, you will see a warning instead of a button.
 
       <script type="module" src="https://unpkg.com/esp-web-tools@10/dist/web/install-button.js?module"></script>
-      <esp-web-install-button manifest="https://firmware.esphome.io/voice-assistant/m5stack-atom-echo/manifest.json"></esp-web-install-button>
+      <esp-web-install-button manifest="https://firmware.esphome.io/wake-word-voice-assistant/m5stack-atom-echo/manifest.json"></esp-web-install-button>
    - **For advanced users**: The configuration file is available on [GitHub](https://github.com/esphome/firmware/blob/main/voice-assistant/m5stack-atom-echo.yaml).
 
 {% include voice_assistant/install_esp_firmware.md %}