Action link not clickable in Task notification within HCM - Solution

Summary:

The ${TaskURL} variable in the "bell" and "things to finish" notification is not clickable. It is clickable in the email notification, probably because the email client recognizes it is a URL.
Tried to make the link clickable by creating a link using HTML: "<a target="_blank" href="${TaskURL}">Execute task</a> but the editor wouldn't save the link. This was pretty frustrating as I couldn't find the reason it was not working and without the link being clickable, the notification within HCM will frustrate users as well.
It turns out "href" is a variable as well and has to be used as such. So: <a target="_blank" ${href}="${TaskURL}">Execute Task</a>