Deprecate BluetoothRemoteGATTCharacteristic.writeValue

See https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-writevalue
See WebBluetoothCG/web-bluetooth#238

Related: mdn/browser-compat-data#9572

Fixes #3382

files/en-us/web/api/bluetoothremotegattcharacteristic/writevalue/index.html

@@ -11,7 +11,9 @@
 - Web Bluetooth API
 - writeValue
 ---
-<p>{{SeeCompatTable}}</p>
+<p>{{Deprecated_header}}</p>
+
+<p>Use <code>writeValueWithResponse()</code> and <code>writeValueWithoutResponse()</code> instead.</p>
 
 <p>The <strong><code>BluetoothRemoteGATTCharacteristic.writeValue()</code></strong> method
   sets the value property to the bytes contained in an {{jsxref("ArrayBuffer")}} and