Update ms.date to reflect when doc was updated

Author: andrewconnell

docs/spfx/web-parts/guidance/build-client-side-web-parts-with-angular-1-x.md

@@ -1,7 +1,7 @@
 ---
 title: Tutorial - Build SharePoint Framework client-side web parts with AngularJS
 description: Use AngularJS to build a client-side web part to manage To Do items and style it using Office UI Fabric.
-ms.date: 12/02/2020
+ms.date: 05/18/2021
 ms.prod: sharepoint
 localization_priority: Priority
 ---