I am trying to set up Customer communities on the system and am using the Napili standard template that Salesforce provides. I am trying to create a custom tab to allow the user to land on his/her Contact detail page.
However when I try to create the URL using the merge syntax for User's Contact ({!$User.ContactId}), the system throws an error that says,
'The value you entered "/contact/{!$User.ContactId}" for Menu Item "My Contact" of Menu Item Type "InternalLink" isn’t valid.'

How do we define dynamic record IDs for community URL for tabs within the Navigation Menu?