(chore): Fix notification links

Some links in the notifications on production are being generated incorrectly. eg.

https://www.minds.com/newsfeed/minds/blog/power-to-the-people-the-minds-jury-system-975486713993859072 should be https://www.minds.com/minds/blog/power-to-the-people-the-minds-jury-system-975486713993859072

Newfeed is being added to the path. My hypothesis is because of the the json file that generates the notification links has inconsistent data in the path values. Some values begin with a slash and others do not.