Update sample.json

Touching sample.json to force loading in sample gallery

samples/react-dashboards/assets/sample.json

@@ -43,8 +43,8 @@
             {
                 "name": "Build your first SharePoint client-side web part",
                 "description": "Client-side web parts are client-side components that run in the context of a SharePoint page. Client-side web parts can be deployed to SharePoint environments that support the SharePoint Framework. You can also use modern JavaScript web frameworks, tools, and libraries to build them.",
-                "url": "https://docs.microsoft.com/en-us/sharepoint/dev/spfx/web-parts/get-started/build-a-hello-world-web-part"
+                "url": "https://learn.microsoft.com/en-us/sharepoint/dev/spfx/web-parts/get-started/build-a-hello-world-web-part"
             }
         ]
     }
-]
+]