Fix entry in Network changelog

Author: markcowl

src/ResourceManager/Network/ChangeLog.md

@@ -19,7 +19,9 @@
 --->
 
 ## Current Release
-## Version 6.0.0* Bump up network sdk version from 17.0.0.preview to 18.0.0.preview
+
+## Version 6.0.0
+* Bump up network sdk version from 17.0.0.preview to 18.0.0.preview
 * Rerecord all network tests with latest sdk version* Set minimum dependency of module to PowerShell 5.0
 * Add support for DDoS protection plan resource
 * Introduced multiple breaking changes