README: Update setup instructions to match the latest IDE version

README.md

@@ -6,16 +6,13 @@ This is a project template for a greenfield Java project. It's named after the J
 
 Prerequisites: JDK 11, update Intellij to the most recent version.
 
-1. Open Intellij (if you are not in the welcome screen, click `File` > `Close Project` to close the existing project dialog first)
-1. Set up the correct JDK version, as follows:
-   1. Click `Configure` > `Structure for New Projects` and then `Project Settings` > `Project` > `Project SDK`
-   1. If JDK 11 is listed in the drop down, select it. If it is not, click `New...` and select the directory where you installed JDK 11
-   1. Click `OK`
-1. Import the project into Intellij as follows:
-   1. Click `Open or Import`.
-   1. Select the project directory, and click `OK`
+1. Open Intellij (if you are not in the welcome screen, click `File` > `Close Project` to close the existing project first)
+1. Open the project into Intellij as follows:
+   1. Click `Open`.
+   1. Select the project directory, and click `OK`.
    1. If there are any further prompts, accept the defaults.
-1. After the importing is complete, locate the `src/main/java/Duke.java` file, right-click it, and choose `Run Duke.main()`. If the setup is correct, you should see something like the below:
+1. Configure the project to use **JDK 11** (not other versions) as explained in [here](https://www.jetbrains.com/help/idea/sdk.html#set-up-jdk).
+1. After that, locate the `src/main/java/Duke.java` file, right-click it, and choose `Run Duke.main()`. If the setup is correct, you should see something like the below:
    ```
    Hello from
     ____        _