PXD-2257 ⁃ fix sheepdog's sphinx documentation

[philloooo]

Figure out if Sphinx can parse the format we use to document endpoints:

def get_new_endpoint_function(param1):
    """
    Detailled description of this endpoint

    Summary:
        A short summary of what this endpoint does

    Tags:
        program
        
    Args:
        param1 (str): description of the path parameter
    
    Query Args:
        param2 (str): description of the query parameter

    Responses:
        200: Success
        403: Unauthorized request
    """
    #################
    # function body #
    #################