COVID: Show Date & Data Source Attribution

[venisha-kalola]

Display the summary data Date field and credit the data source.

Acceptance Criteria:

• Date from summary displayed near title or Global Stats card.
• Human readable formatting (UTC labeled or localized).
• Fallback text if Date missing.
• Source link to https://covid19api.com with note about potential delays.

File: src/pages/Covid.jsx

[HITMAN5050]

Hello @venisha-kalola ma'am I'd like to contribute here , can you plz assign me ?

[HITMAN5050]

Hello mam can you plz assign me ?!

[biswajit-sarkar-007]

Hi @venisha-kalola I would like to work on this issue. Could you please assign it to me?