Made heading sentence case

Author: JamesJBarnett

articles/communication-services/how-tos/calling-sdk/lobby-admit-and-reject.md

@@ -12,7 +12,7 @@ ms.custom: template-how-to
 
 ---
 
-# Manage Teams meeting Lobby
+# Manage Teams meeting lobby
 
 APIs lobby admit and reject on `Call` or `TeamsCall` class allow users to admit and reject participants from Teams meeting lobby.
 
@@ -145,4 +145,4 @@ await call.admitAll();
 - [Learn how to manage calls](./manage-calls.md)
 - [Learn how to manage Teams calls](../cte-calling-sdk/manage-calls.md)
 - [Learn how to join Teams meeting](./teams-interoperability.md)
-- [Learn how to manage video](./manage-video.md)
+- [Learn how to manage video](./manage-video.md)