Formatting (tari-project#109)

This PR fixes a formatting issue.

examples/ringct.rs

@@ -30,7 +30,7 @@ mod test {
 
  // Value commitments use the Triptych `G` generator for masks, and need another component for values
  // In practice it's essential that `G` and `H` have no efficiently-computable discrete logarithm relationship
- // For this example, we'll just make it random; in the real world, you'd use a verifiable hash-based construction
+ // For this example, we'll just make it random; in the real world, you'd use a verifiable construction
  let H = RistrettoPoint::random(&mut rng);
 
  // All output verification keys and value commitments (except ours) look random to us, so just make them random!