document that the info hook can also return HTML formatted data
# Also used in a single provider setup with OIDCProviderMetadatURL but 0 then means the default of 1 day.
#OIDCProviderMetadataRefreshInterval <seconds>
-# Define the data that will be returned upon calling the info hook (i.e. <redirect_uri>?info=json)
+# Define the data that will be returned upon calling the info hook.
+# The data can be JSON formatted using <redirect_uri>?info=json, or HTML formatted, using <redirect_uri>?info=html.
# iat (int) : Unix timestamp indicating when this data was created
# access_token (string) : the access token
# access_token_expires (int) : the Unix timestamp which is a hint about when the access token will expire (as indicated by the OP)
