Broken links in README

[naXa777]

Whoever addresses this ticket, kindly update all the specified links in the main readme.

These links are dead:

- https://aw.club/global/en/blog/volunteer/brain-up?utm_source=telegram&utm_medium=social&utm_campaign=ongoing 11.08.2022 (russian, english)

- https://anywhere.epam.com/volunteer/pages-1/brainApp.html (will be fixed soon) 05.05.2020

6. For `api.raml` validation, you can use [Api Designer] (https://rawgit.com/mulesoft/api-designer/v0.4.2/dist/index.html).

Ok, the last example works today, but winter is coming. See the warning at https://rawgit.com/

If you're currently using RawGit, please stop using it as soon as you can.

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Product Vision https://github.com/Brain-up/brn/wiki/Product-Vision.

This link should be replaced with https://github.com/Brain-up/brn/wiki/BRN:-Product-Vision

[naXa777]

I don't know what replacement links should be used. Is it ok to simply delete the broken links?