fix(frontend): Fix broken terms of use link

[Torantulino]

This pull request includes several small changes to the SubmitPage component in the autogpt_platform/frontend/src/app/marketplace/submit/page.tsx file. The changes primarily involve updating the terminology from "terms of service" to "terms of use" to ensure consistency and accuracy.

Terminology updates:

• Updated the error message to "You must agree to the terms of use" when the user does not agree to the terms (autogpt_platform/frontend/src/app/marketplace/submit/page.tsx).
• Changed the validation rule message to "You must agree to the terms of use" (autogpt_platform/frontend/src/app/marketplace/submit/page.tsx).
• Updated the hyperlink text to "terms of use" and changed the URL to the correct terms of use page (autogpt_platform/frontend/src/app/marketplace/submit/page.tsx).

[qodo-merge-pro]

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⏱️ Estimated effort to review: 1 🔵⚪⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Consistency Check Ensure that all instances of "terms of service" have been updated to "terms of use" throughout the entire codebase, not just in this file.

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