Update flutter-toc.html

Author: LavanyaA

flutter-toc.html

@@ -3,7 +3,7 @@
      <li>
         <a href="/Flutter/introduction/api-reference">API Reference</a>
 		<ul>
-		<li><a href="https://pub.dev/documentation/syncfusion_flutter_barcodes/latest/barcodes/barcodes-library.html">Barcode Generator</a></li>
+		<li><a href="https://pub.dev/documentation/syncfusion_flutter_barcodes/latest/barcodes/barcodes-library.hthow toml">Barcode Generator</a></li>
 		<li><a href="https://pub.dev/documentation/syncfusion_flutter_calendar/latest/calendar/calendar-library.html">Calendar</a></li>
         <li><a href="https://pub.dev/documentation/syncfusion_flutter_charts/latest/charts/charts-library.html">Charts</a></li>
         <li><a href="https://pub.dev/documentation/syncfusion_flutter_datagrid/latest/datagrid/datagrid-library.html">DataGrid</a></li>
@@ -562,8 +562,7 @@
 			<li><a href="/Flutter/pdf/working-with-pdf-conformance">Working with PDF Conformance</a></li>
 			<li><a href="/Flutter/pdf/working-with-attachments">Working with Attachments</a></li>
 			<li><a href="/Flutter/pdf/working-with-layers">Working with Layers</a></li>
-			<li><a href="/Flutter/pdf/working-with-forms">Working with Forms</a></li>
-            <li>How to<ul><li><a href="/Flutter/pdf/how-to/custom-widget-on-flutterflow">Custom Widget on FlutterFlow</a></li></ul></li>
+			<li><a href="/Flutter/pdf/working-with-forms">Working with Forms</a></li>            
         </ul>
     </li>
     <li>
@@ -603,8 +602,7 @@
             <li><a href="/Flutter/xlsio/working-with-conditional-formatting">Working with Conditional Formatting</a></li>
             <li><a href="/Flutter/xlsio/working-with-data">Working with Data</a></li>
             <li><a href="/Flutter/xlsio/working-with-data-validation">Working with Data Validation</a></li>
-            <li><a href="/Flutter/xlsio/working-with-table">Working with Tables</a></li>
-            <li>How to<ul><li><a href="/Flutter/xlsio/how-to/custom-widget-on-flutterflow">Custom Widget on FlutterFlow</a></li></ul></li>
+            <li><a href="/Flutter/xlsio/working-with-table">Working with Tables</a></li>            
         </ul>
     </li>
     <li>