Replaced "(C)" with "©" in the main menu.

[DandelionSprout]

• [x] I have signed the Contributor License Agreement.
• [ ] I have updated the Release Notes.
• [ ] This pull request is related to an issue.

---

It simply looks cooler and more professional this way, and I'd have bet my honour that 100% of Windows 11/10 users, and practically 100% of Windows Server 2025 users, have monofonts that support the © Unicode character.

Microsoft Reviewers: Open in CodeFlow