docs: fix typo in readme (#217)
docs: fix typo in readme (#217)

**What**:
Just a typo in the docs

**Why**:

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**How**:

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**Checklist**:

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- [ ] Documentation N/A
- [ ] Tests N/A
- [x] Ready to be merged

testing-library/react-testing-library,testing-library/react-testing-library,testing-library/react-testing-library