Fix typo in README.md (activate instead of active)

[mkhmik004]

Corrected a typo in the README.md where the command to activate the virtual environment was mistakenly written as 'source env/bin/active' instead of 'source env/bin/activate'

[mkhmik004]

Fixed a small but important typo in the README.md that could lead to confusion for users setting up their virtual environment. The command should be source env/bin/activate instead of source env/bin/active. This correction ensures that users can properly activate their virtual environment without running into errors. If needed, I can also update the README to include activation instructions for Windows users.