Not using correct UML symbols in DG

[NivethaUdayakumar]

Should be +, -, etc access modifiers according to module format.

[soc-se-bot]

Team's Response

No details provided by team.

Items for the Tester to Verify

:question: Issue severity

Team chose [severity.Low] Originally [severity.Medium]

• [ ] I disagree

Reason for disagreement: [replace this with your explanation]

---