def metrics_docs(obj_name: str) ->str:
    """
    Return a link to the documentation entry for the Glean SDK metric of the
    requested type.
    """
    base_url = 'https://mozilla.github.io/glean/book/user/metrics/{}.html'
    fixedup_name = obj_name
    if obj_name.startswith('labeled_'):
        fixedup_name += 's'
    return base_url.format(fixedup_name)
