Fix the figure shortcode for multilingual site

[sammedhi]

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

Fix the figure shortcode for multilingual site

The figure shortcode now use RelPermalink instead of the link provided by the user. Using the link provided by the user caused the image not to load when using local url for translated the site was translated. When you translated the site the url is modified (eg: site/fr/post/article/), if you tried to load the image located at "site/post/article/img.png" using {{<figure src="img.png" >}} the image would not load since the resulting link would be "site/fr/post/article/img.png".

This would not work for site using translation by file name https://gohugo.io/content-management/multilingual/#translation-by-file-name

Which is inconsistent with the markdown behaviour where local path works fine.

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

No, it just happened that the default hugo shortcode was working while the paperMod's one was not loading my image on my translated pages

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 SonarQube Cloud