Confusing Doc for know which version of doc I read Currently

Hello Ionic,

Ionic is a fantastic framework for mobile development. I just need one fever from the ionic side.
Please show the dropdown or select for version. Here this small thing create a huge confusion about which version of doc I am reading currently

I talk about this site:

You can also see any framework website mostly I use one is Laravel for reference
Laravel : https://laravel.com/docs/5.7/installation

Thanks
Bhandari Ravindra