Update testing_approach.rst (#937)
Update testing_approach.rst (#937)

* Update testing_approach.rst

* Update doc/main/intro/testing_approach.rst

Co-authored-by: Pavel Kumbrasev <01894d171a6b3a8e019f625098d1e91c2ac09433@intel.com>

Co-authored-by: Pavel Kumbrasev <01894d171a6b3a8e019f625098d1e91c2ac09433@intel.com>
oneapi-src/oneTBB,oneapi-src/oneTBB,oneapi-src/oneTBB,oneapi-src/oneTBB