message: [Storage] Fix typo
  Closes:
  Approved by: zamsden
diff: //! | epoch_num | ledger_info_with_signatures bytes |
  //! ```
  //!
  -//! `epoch_num` is serialized in big endian so that records in RocksDB will be in order of it's
  +//! `epoch_num` is serialized in big endian so that records in RocksDB will be in order of their
  //! numeric value.
  use crate::schema::ensure_slice_len_eq;
  