[Roles] Change the cadran "Activities" to "Roles"

[StephanieHP]

Context : #573

User voice

As a user, I want to have the information of the role of a consultant

Given I'm on the main page
When I ride the title of the cadran on the upper right side, it's called "Roles"
And, when I click on the section
Then I can ride "Role" next to the previous button