Update service-limits.md

changed sentence, removed link.

Author: vac0224

articles/communication-services/concepts/service-limits.md

@@ -160,14 +160,14 @@ This sandbox setup is to help developers start building the application. Once yo
 > ** Read receipts and typing indicators are not supported on chat threads with more than 20 participants. 
 
 ### Chat storage
-Azure Communication Services stores chat messages according to your [data retention policy](/purview/create-retention-policies).
+Azure Communication Services stores chat messages according to the retention policy you set when you create a chat thread.
 
 [!INCLUDE [public-preview-notice.md](../includes/public-preview-include-document.md)]
 
 You can choose between indefinite message retention or automatic deletion between 30 and 90 days via the retention policy on the [Create Chat Thread API](/rest/api/communication/chat/chat/create-chat-thread).
 Alternatively, you can choose not to set a retention policy on a chat thread.
 
-If you have strict compliance needs, we recommend that you delete the chat threads using the API [Delete Chat Thread](/rest/api/communication/chat/chat/delete-chat-thread). Any threads created before the new retention policy aren't affected unless you specifically change the policy for that thread.
+If you have strict compliance needs, we recommend that you delete chat threads using the API [Delete Chat Thread](/rest/api/communication/chat/chat/delete-chat-thread). Any threads created before the new retention policy aren't affected unless you specifically change the policy for that thread.
 
 > [!NOTE] 
 > If you accidentally deleted messages, they can't be recovered by the system. Additionally, if you submit a support request for a deleted chat thread after the retention policy has deleted that thread, it can no longer be retrieved and no information about that thread is available.