No documentation for items with attributes coming before docstrings

[mkurnikov]

See

#[event]
/// When `ObservedJWKs` is updated, this event is sent to resync the JWK consensus state in all validators.
struct ObservedJWKsUpdated has drop, store {
    epoch: u64,
    jwks: AllProvidersJWKs,
}

for an example.

Refs #202