License of kotlin tutorials and kotlin reference

could you, please, point me at the licenses(or copyright) of kotlin reference( and kotlin tutorials( As i aint see a link on the pages.
Public domain as intellectual property or something?
i ask because i’ve discovered that Oracle’s java tutorials are subject to the Java Tutorial Copyright and License.
btw(e.g.): postgresql documentation also has a legal notice PostgreSQL: Documentation: 9.6: PostgreSQL 9.6.24 Documentation

All code and content on is licensed under the Apache 2 license, like the rest of Kotlin. kotlin-web-site/LICENSE at master · JetBrains/kotlin-web-site · GitHub

thank you;
i mean, no links on the pages and
e.g.: here The Rust Programming Language - The Rust Programming Language also Copyright is seen at the bottom of the page

I’ve filed an issue in our internal issue tracker to add this information to the site footer.