Fix typo in README.md regarding test support

[Evagan2018]

Fixes

• #

Changes

Screenshots

Checklist

• 🤖 This change is covered by unit tests (if applicable).
• 🤹 Manual testing has been performed (if necessary).
• 🛡️ Security impacts have been considered (if relevant).
• 📖 Documentation updates are complete (if required).
• 🧠 Third-party dependencies and TPIP updated (if required).

[soumeh01]

Was created as a test PR to check if contributions through forks make MD linting and Link checking pass?
This is been fixed in #490