[doc] make JDK version consistent in readme guide.
@@ -217,7 +217,7 @@ required plugins.
1. Open Maven Importing Settings dialog by going to
**Settings** -> **Build, Execution, Deployment** -> **Build Tools** -> **Maven** -> **Importing**.
-2. Choose **Use Project JDK** for **JDK for Importer** setting. This uses the Java 11 JDK for running Maven
+2. Choose **Use Project JDK** for **JDK for Importer** setting. This uses the Java 17 JDK for running Maven
when importing the project to IntelliJ. Some of the configuration in the Maven build is conditional based on
the JDK version. Incorrect configuration gets chosen when the "JDK for Importer" isn't the same as the "Project JDK".
