Add 'optional' note

Tools/WinMLDashboard/public/convert.py

@@ -7,7 +7,7 @@ def parse_args():
     parser.add_argument('source', help='source  model')
     parser.add_argument('framework', help='source framework model comes from')
     parser.add_argument('ONNXVersion', help='which ONNX Version to convert to')
-    parser.add_argument('inputNames', help='names of input nodes')
+    parser.add_argument('inputNames', help='names of input nodes (optional)')
     parser.add_argument('outputNames', help='names of output nodes')
     parser.add_argument('destination', help='destination ONNX model (ONNX or prototxt extension)')
     parser.add_argument('--name', default='WimMLDashboardConvertedModel', help='(ONNX output only) model name')

Tools/WinMLDashboard/src/view/convert/View.tsx

@@ -254,7 +254,7 @@ class ConvertView extends React.Component<IComponentProperties, IComponentState>
                 <div className={this.state.framework === 'TensorFlow' ? ' ' : 'hidden'}>
                     <div className='DisplayFlex'>
                         <label className='label-left-align'>Input Names: </label>
-                        <TextField id='inputNames' className='inputNames' placeholder='X:0' value={this.state.inputNames}  onChanged={this.setInputNames} />
+                        <TextField id='inputNames' className='inputNames' placeholder='X:0 (optional)' value={this.state.inputNames}  onChanged={this.setInputNames} />
                     </div>
                 </div>
                 <br />