`featuredImage` does not correctly link to images in a page bundle

[Tempystral]

Describe the problem:

The page's featured image does not display when using bundled resources. This worked in an older version of hugo-coder but after updating it appears to no longer work.

Steps to reproduce:

1. Create a page bundle containing an image. I have a few in this bundle.
2. Set that image as the featuredImage

Observed Results:

The image does not display:

I believe this is because of the | relURL pipe in the posts/single.html partial. If I remove that line and just display .Params.featuredImage it's fine:

I imagine having this relURL is probably useful for other use cases but it would be nice if Hugo supported bundled images in the header for easy asset organization.