Update to the Embedding and Elastic Template code example

Author: InbarGazit

launcher-csharp/Click/Views/EmbedClickwrap/Embed.cshtml

@@ -14,7 +14,7 @@
 <p><a href="/">@Html.Raw(ViewBag.SupportingTexts.ContinueButton)</a></p>
 
 <div id="ds-terms-of-service"></div>
-<script src="https://stage.docusign.net/clickapi/sdk/latest/docusign-click.js"></script>
+<script src="https://demo.docusign.net/clickapi/sdk/latest/docusign-click.js"></script>
 <script>
     docuSignClick.Clickwrap.render({
         agreementUrl: "@ViewBag.AgreementUrl",