How to get “https” link instead of “http” for Salesforce Visualforce Page using URLFOR() in Email Template ?

When you create the Link using URLFOR() in Email Template, it creates link in “http” format instead of “https” and thus causes end user to logged into salesforce again.

So instead of

<a href='{!URLFOR('/apex/SomePage', null, [id=Some_Object__c.Id,retURL="/apex/SomeOtherPage"])}'>Go to SomePage here!</a>

We can use something like :

<a href='{!SUBSTITUTE(URLFOR('/apex/SomePage', null, [id=Some_Object__c.Id,retURL="/apex/SomeOtherPage"]),'http:','https:')}'>Go to SomePage here!</a>