Update structopt doc for private tally certificate
@@ -44,7 +44,8 @@ pub struct PrivateTally {
#[structopt(long)]
pub vote_plan: PathBuf,
- /// path to the json file containing the vote plan result
+ /// The id of the vote plan to include in the certificate.
+ /// Can be left unspecified if there is only one vote plan in the input
#[structopt(long)]
pub vote_plan_id: Option<Hash>,
