Fix: tiny typo in the README

[joconnor-ecaa]

Description

nedd -> need

Checklist

• [x] Dependencies install correctly in a clean environment and code executes;
• [ ] Test coverage extended; created tests fail without the change (if possible);
• [x] All tests passing;
• [x] Commits follow a type convention (e.g. https://gist.github.com/brianclements/841ea7bffdb01346392c#type);
• [x] Extended the README, documentation and/or docstrings, if necessary;