Update crate comment
//! Storage crate provides the interfaces to interact with the database.
//! The backend database used in this crate is `Postgres`, and interaction
-//! with it is based on the `diesel` crate.
+//! with it is based on the `sqlx` crate.
//!
//! The essential structure of this crate is the `StorageProcessor`, which
//! holds down the connection to the database and provides abstract interfaces
//!
//! Tests for the storage use the actual empty Postgres database.
//! Because of that, these tests are disabled by default, to run them you must use
-//! `zksync db-test` (or `zksync db-test-no-reset`, if this is not a first run)
+//! `zk test db` (or `zk test db --no-reset`, if this is not a first run)
//! command, which will setup the database and enable the tests by passing a feature flag.
//!
//! Tests are implemented in a form of "test transactions", which are database transactions
