Include the meaning of the band names in the documentation

Since the names of the Sentinel-2 bands, as given in the s2downloader are not common understanding, it would be good to add some infos to the documentation what these names stand for. Either add an description or the link to the source?
https://radiantearth.github.io/stac-browser/#/external/earth-search.aws.element84.com/v1/collections/sentinel-2-l2a?.language=en