translate Thinking in React (#90)

* translate Thinking in React

* Update title thinking-in-react.md

* Implement recommended changes

* Fix steps headers

* Fix typo

* Fix thinking in react

* Update steps headers

* Work on big sentences

* Fix \

* Apply suggestions from code review

Co-Authored-By: marichka-offen <40467112+marichka-offen@users.noreply.github.com>

* Apply suggestions from code review

* Update thinking-in-react.md

* nits