docs: Update README

[volodymyr-chekyrta]

EducationX name and URL replaced with Open edX

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[saeedbashir]

@volodymyr-chekyrta Do we need to update the license URL or is it the correct one?

## License
The code in this repository is licensed under the Apache-2.0 license unless otherwise noted.

Please see [LICENSE](https://github.com/raccoongang/educationx-app-ios/blob/main/LICENSE) file for details.

[volodymyr-chekyrta]

@volodymyr-chekyrta Do we need to update the license URL or is it the correct one?

## License
The code in this repository is licensed under the Apache-2.0 license unless otherwise noted.

Please see [LICENSE](https://github.com/raccoongang/educationx-app-ios/blob/main/LICENSE) file for details.

Thanks! I missed that.
Updated to the correct URL ✅

[volodymyr-chekyrta]

@saeedbashir could you please check this PR?
Feedback has been addressed, and PR is ready for your review.

[saeedbashir]

LGTM 👍

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