provide link to sample files

BlazorApp-Investment Tax Calculator/Pages/Index.razor

@@ -6,7 +6,9 @@
         <p>This application is designed to accept broker statements (only Interactive Brokers XML statement currently) and output taxable gains and losses according to normal trade matching rules.</p>
         <p>Also report dividends and withholding tax paid by countries.</p>
         <p>To sum up, this application assists you in filling out the SA106, SA108 tax forms.</p>
-        <p>To get started, gather some sample XML files and try to import them by going to the 'Import/Export' tab.</p>
+        <p>To get started, gather some sample XML files 
+            <a href="https://github.com/alexpung/UK-Investment-tax-calculator/tree/master/UnitTest/System%20Test/Interactive%20brokers" class="link-primary">here</a>
+            and try to import them by going to the 'Import/Export' tab.</p>
         <p>Your trade data is not uploaded anywhere. They never leave your browser thanks to the Blazor Webassembly framework. The calculation is entirely done in your browser.</p>
         <p>Permission to use the software is granted under the MIT license.</p>