fix: typo 'acceptation' → 'acceptance' in README

[ibnzUK]

Summary

Test plan

• pytest passes locally
• ruff check and ruff format --check pass

Checklist

• I have signed the Meta CLA
• My changes follow the contributing guide

[meta-cla]

Hi @ibnzUK!

Thank you for your pull request and welcome to our community.

Action Required

In order to merge any pull request (code, docs, etc.), we require contributors to sign our Contributor License Agreement, and we don't seem to have one on file for you.

Process

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[meta-cla]

Thank you for signing our Contributor License Agreement. We can now accept your code for this (and any) Meta Open Source project. Thanks!

[bullet1a]

Feature Idea: Use morse code to assist in the code input of brain2qwerty, calibrate the code and the mechanism of brain2qwerty project, If it can help.

https://share.google/aimode/vkSzK1RYKrSZQ4xd4