docs: describe in more exact words how to start the solution

7-bank-project/solution/README.md

@@ -9,5 +9,5 @@ First make sure you have the [API server](../api/README.md) running.
 Any web server can be used to run the app, but since you should have [Node.js](https://nodejs.org) installed anyway to run the API, you can:
 
 1. Git clone this repo.
-2. Open a terminal, then run `npx lite-server solution`. It will start a development web server on port `3000`
+2. Open a terminal, navigate to this directory, then run `npx lite-server .`. It will start a development web server on port `3000`
 3. Open `http://localhost:3000` in a browser to run the app.