Update index.md

[alsugiliazova]

Contributor License Agreement

For more information see https://github.com/testflows/TestFlows/blob/master/CONTRIBUTING.md.

You can electronically sign the CLA inside your first pull request using CLA Assistant by reading the CLA
and, when requested, sign it by adding a comment containing the following text.

I have read the CLA Document and I hereby sign the CLA

I, the Contributor, have agreed to and signed the CLA.

• https://github.com/testflows/TestFlows/blob/master/cla/individual_esign_v1.md

Description of Changes

Please describe here your proposed changes.