Docs seems to have a typo

I think I’ve found a small typo in the docs here

The doc says

pip install -U pip
pip install rasa-x==0.35.0 --extra-index-url [https://pypi.rasa.com/simple](https://pypi.rasa.com/simple)

however, the second command should be

pip install rasa-x==0.35.0 --extra-index-url https://pypi.rasa.com/simple

Yep you’re right! Here’s a fix for it: https://github.com/RasaHQ/rasa-x/pull/4329/files