Onboarding Step 2 - Messaging changes

For the Heading use font-semibold
Heading: “Pick your AISquare Username”
Subtext: “This will personalize your profile and reserve your unique AISquare identity.”

Changes in the profile URL: Your Profile URL:
https://home.aisquare.studio/profile/[username]

Remove the AI Studio URL field. and also redo the profile URL part as shown below. Dont change the colors from the current implementation.