Update path to reflect new package installation

[garrettboone]

Update paths in Healthcheck notifications

This pull request is a (multiple allowed):

• [x] bug fix
• [ ] change of existing behavior
• [ ] new feature

What you did

Healthcheck is currently instructing users to modify config path files (app.php and passbolt.php) though the config folder path is no longer used in the newly promoted package installation method.