fix changelog

Author: solankisamir

src/ApiManagement/ApiManagement/ChangeLog.md

@@ -19,7 +19,7 @@
 -->
 ## Upcoming Release
 * Update `-Format` parameter description in `Set-AzApiManagementPolicy` reference documentation
-* Updated `RelatedLinks` and added more examples to `New-AzApiManagementVirtualNetwork` reference documentation
+* Removed references of deprecated cmdlet `Update-AzApiManagementDeployment` from reference documentation. Use `Set-AzApiManagement` instead.
 
 ## Version 1.3.0
 * Fixed miscellaneous typos across module