Updated Bitfinity wallet URL

[nsafarova]

Updated the website link of Bitfinity to the valid URL. The previous one was not working.

Thank you for your contribution to the IC Developer Portal. This repo contains the content for https://internetcomputer.org and the ICP Developer Documentation, https://internetcomputer.org/docs/.

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[sa-github-api]

Dear @nsafarova,

In order to potentially merge your code in this open-source repository and therefore proceed with your contribution, we need to have your approval on DFINITY's CLA.

If you decide to agree with it, please visit this issue and read the instructions there. Once you have signed it, re-trigger the workflow on this PR to see if your code can be merged.

— The DFINITY Foundation