Describe the bug

• Device/Os: Linux Mint 21.3 Cinnamon
• Type: Desktop
• Browser and version [e.g. Chrome 86.0]: Chrome Version 127.0.6533.88 (Official Build) (64-bit)
• Hugo Version [ >=0.112.4 expected]: 0.128.2
• Theme Version [e.g. v4.0, master, or commit-id ]: master

Steps to reproduce the behavior:

1. Checkout to exampleSite branch.
2. Change config.yml such that params.cover.linkFullImages is set to true.
3. Run hugo server -D
4. Click the cover image in the "Markdown Syntax Guide" page
5. See a 404 not found

Expected behavior:

No 404 not found.

Repo/Source where this issue can be reproduced:

Screenshots

Additional context

The URL is http://localhost:1313/hugo-PaperMod/posts/markdown-syntax/images/msg.png. However it should be http://localhost:1313/hugo-PaperMod/images/msg.png. I found the problem is due to this line:

Change it from (path.Join .RelPermalink .Params.cover.image) to (.Params.cover.image) solves the problem.

I'll create a PR if this solution is applicable.