*Please describe the question or issue you're facing with "charmcraft.yaml file - Charmcraft 3.5.2 documentation".* It is unclear what is allowed to put in the `links:` section in the charmcraft.yaml. It seems that it is limited to specific fields, but those are not mentioned. Example: I tried to link to upstream in it's own section with ``` links: upstream: - your-upstream-here ``` but got: ``` Bad charmcraft.yaml content: - extra inputs are not permitted (in field 'links.upstream') ``` --- *Reported from: https://canonical-charmcraft.readthedocs-hosted.com/stable/reference/files/charmcraft-yaml-file/*