CONTRIBUTING.md: Fix Kobzol link
CONTRIBUTING.md: Fix Kobzol link

Co-authored-by: Arseniy Pendryak <5997afcfaacc5e6112395e5abe544ea56881319a@yandex.ru>
Undin/intellij-rust,Undin/intellij-rust,intellij-rust/intellij-rust,Undin/intellij-rust,intellij-rust/intellij-rust,Undin/intellij-rust,intellij-rust/intellij-rust,intellij-rust/intellij-rust,intellij-rust/intellij-rust,Undin/intellij-rust,Undin/intellij-rust,intellij-rust/intellij-rust