minor edit

src/check_sqlite.rs

@@ -15,8 +15,8 @@ events
         aggregate_type TEXT                         NOT NULL,
         aggregate_id   TEXT                         NOT NULL,
         sequence       bigint CHECK (sequence >= 0) NOT NULL,
-        payload        TEXT         NOT NULL,
-        metadata       TEXT         NOT NULL,
+        payload        TEXT                         NOT NULL,
+        metadata       TEXT                         NOT NULL,
         timestamp      timestamp DEFAULT (CURRENT_TIMESTAMP),
         PRIMARY KEY (aggregate_type, aggregate_id, sequence)
     );