bug: Clicking Instructor name in Study Groups redirects to incorrect URL (404)

[nora-weisser]

Description:
When a user clicks on an instructor’s name on the Study Groups page, they are redirected to a non-existent URL, resulting in a 404 error.

Steps to Reproduce:

1. Navigate to the Study Groups page: /mentorship/study-groups
2. Click on any instructor’s name

Actual Result:
The user is redirected to:
/mentors?keywords={mentor_name}
This route does not exist and returns a 404 page.

Expected Result:
The user should be redirected to:
/mentorship/mentors?keywords={mentor_name}
which correctly displays the mentor search results.