Feat/improve cover image gen

[adityatelange]

What does this PR change? What problem does it solve?

This pull request introduces improvements to the cover image generation in the Hugo PaperMod theme. The changes include:

• Refactoring: cover.html has been refactored to use the element for image captions, enhancing HTML5 semantics and accessibility.
• Bug Fixes: Removed pointer-event prevention from entry-cover images to ensure better user interaction.
• Code Quality: Added comments and managed whitespace for better code readability.

Was the change discussed in an issue or in the Discussions before?

No.

PR Checklist

• This change adds/updates translations and I have used the template present here.
• I have enabled maintainer edits for this PR.
• I have verified that the code works as described/as intended.
• This change adds a Social Icon which has a permissive license to use it.
• This change does not include any CDN resources/links.
• This change does not include any unrelated scripts such as bash and python scripts.
• This change updates the overridden internal templates from HUGO's repository.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud