As image-rendering is a branch bundle, it is considered a section by
Hugo and relrefs should be resolved from there even for child pages.
The behavior that worked in `next` but not `latest` could be explained
by the lenient but potentially ambiguous relref resolution algorithm
Hugo uses. However, I have not determined the exact difference between
the two sets of content that causes `next` to work but `latest` not to.
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
