fix doc test error.
/// The snapshot format is highlighted in the diagram below. Note: there is no password in the snapshot, the data is
/// password encrypted.
///
-/// Snapshot Format
+// Document Format
/// +-----------------+
/// | Signature bytes |
/// +=================+
/// | Encrypted Data |
/// +-----------------+
///
-///
/// Data can be encrypted prior to being put into the snapshot from the system to further secure the snapshot.
/// The snapshot is sealed with a single password which is used to generate a key. A salt is also generated by
/// libsodium aka Sodium Oxide. The key and salt are used to create the header and a push stream to encrypt the data.
/// bytes or a slice of bytes, it can be written into the snapshot. Libraries such as serde and bincode can be used to
/// serialize the data into a binary format so that it can be inserted into the encryption stream. Helper functions for
/// serializing and deserializing HashMaps are included in this library.
-///
mod error;
mod files;
mod logic;
