Fixed typo.

Author: Heidilohr

articles/virtual-desktop/whats-new-agent.md

@@ -38,7 +38,7 @@ A rollout may take several weeks before the agent is available in all environmen
 
 In this update, we made the following changes:
 
-- Fixed an issue with App Attach diagnostics that the agent to always report timeout exceptions. Now the agent only reports timeout exceptions to diagnostics when app attach registration is unsuccessful.
+- Fixed an issue with App Attach diagnostics that caused the agent to always report timeout exceptions. Now the agent only reports timeout exceptions to diagnostics when app attach registration is unsuccessful.
 
 - General improvements and bug fixes.