* Add translation to russian for the getting started lessons
* Add translation to russian for assignment (1-getting-started)
* fix: return link without language path
* fix: change link path
* add russian translation of README in 1-intro-to-programming-languages
* Add translation to Russian for 2-github-basics
* Correct typos, format text and fix image link
* Add translation to russian for for-teachers.md
* Correct typos and text style
Olga Kitel