Update overview-sharepoint-list-webhooks.md

Assume typos

Author: pbjorklund

docs/apis/webhooks/lists/overview-sharepoint-list-webhooks.md

@@ -22,13 +22,13 @@ Notifications will be sent to your application for the following asynchronous li
 * ItemCheckedIn
 * ItemUncheckedOut
 * ItemAttachmentAdded
-* ItemAtttachmentDeleted
+* ItemAttachmentDeleted
 * ItemFileMoved
-* ItemVersonDeleted
+* ItemVersionDeleted
 * ItemFileConverted
 
 Synchronous events are not supported in webhooks.
 
 ## Additional resources
 
-* [Overview of SharePoint webhooks](../overview-sharepoint-webhooks)
+* [Overview of SharePoint webhooks](../overview-sharepoint-webhooks)