This is the correct link, but it appears to be broken. I'll send a message to let the owner know so that it can be repaired.
There is a new section of the NetApp communities site that encompasses all Microsoft-based solutions:
The communities site for the Data ONTAP PowerShell Toolkit is being moved into the new section:
The Toolkit download section is there already, and the admins are working to move the remaining content. No other changes are planned for the Toolkit's community-based support or release model.