Image Links Are Relative Instead of Absolute in Defuddle Output

[LuciusChen]

Hello,

I've encountered an issue with the defuddle-cli tool where images in the output are linked using relative paths instead of complete, accessible URLs. This creates difficulties when attempting to view the images, as the relative paths are not directly usable outside of the original context.

/Steps to Reproduce:/

1. Use defuddle-cli to extract content from the webpage: https://castel.dev/post/lecture-notes-2/.
2. Observe the image links in the output.
3. Notice that the image paths are relative rather than absolute URLs.