Fix validation error

Author: gitName

learn-pr/achievements.yml

@@ -5989,6 +5989,7 @@ achievements:
   type: badge
   title: Create your first Azure AI speech to text application
   summary: Microsoft's Azure AI services provide developers with APIs to create applications that take advantage of Azure's speech to text features. In this module, you'll learn how to use Azure AI services to create a speech to text application that converts a sample WAVE file into text.
+  iconUrl: /learn/achievements/generic-badge.svg
 - uid: learn.orleans-build-first-app.badge
   type: badge
   title: Build your first Orleans app with ASP.NET Core 8.0