Minor fix in S/PDIF docs

gui/list.html

@@ -312,7 +312,7 @@
 		hardware with different internal settings.</p>
 	</p>
 </script>
-<script type="text/x-red" data-template-name="AudioOutputI2S">
+<script type="text/x-red" data-template-name="AudioOutputSPDIF">
 	<div class="form-row">
 		<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
 		<input type="text" id="node-input-name" placeholder="Name">