fix double source text in Node Edit UI

Author: Steve-Mcl

nodes/widgets/ui_audio.html

@@ -197,7 +197,7 @@
         <input type="text" id="node-input-order">
     </div>
     <div class="form-row ui-audio-mode-src">
-        <label for="node-input-src"><i class="fa fa-globe"></i> <span data-i18n="ui-audio.label.source"></span>Source</label>
+        <label for="node-input-src"><i class="fa fa-globe"></i> <span data-i18n="ui-audio.label.source">Source</span></label>
         <input type="text" id="node-input-src">
     </div>
     <div class="form-row ui-audio-mode-src">