Fix path to train module

src/lib/client.ts

@@ -2,7 +2,7 @@ import { BaseClient } from "./base.js";
 import { PisModule } from "../modules/pis.js";
 import { LocationFilterModule } from "../modules/locationFilter.js";
 import { StationDataModule } from "../modules/stationData.js";
-import { TrainsModule } from "src/modules/trains.js";
+import { TrainsModule } from "../modules/trains.js";
 
 export class OwlBoardClient extends BaseClient {
     public readonly pis: PisModule;