Update the links

Author: KirtiJha-MSFT

msteams-platform/concepts/build-and-test/app-developer-guidance-shared-private-channel.md

@@ -116,9 +116,9 @@ Microsoft Teams supports different types of channels—Standard, Private, and Sh
 
 ### Core Implementation Concepts for Shared and Private Channels
 
- :::image type="content" source="../../assets/images/membership-types-shared-channels.png" alt-text=""This diagram shows how membership works in shared channels across organizations.":::
- 
-:::image type="content" source="../../assets/images/membership-types-private-channels.png" alt-text="This diagram shows how direct membership works in a private channel.":::
+![This diagram shows how membership works in shared channels across organizations.](../../assets/images/membership-types-shared-channels.png)
+
+![This diagram shows how direct membership works in a private channel.](../../assets/images/membership-types-private-channels.png)
 
 ### Channel Membership Basics