Fixed docs/languages/ru/user-guide/overview.rst
Fix translations err
Fix styling comment
Merge pull request #585 from bladeofsteel/fix/ru/typo

Fix translations err
Update docs/languages/en/user-guide/unit-testing.rst

Small fix using root namespace for extending PHPunit
Merge pull request #586 from h4rdc0m/patch-1

Update docs/languages/en/user-guide/unit-testing.rst