DOC: add typing badge to README

Author: MarcoGorelli

README.md

@@ -14,6 +14,7 @@ https://stackoverflow.com/questions/tagged/numpy)
 [![Nature Paper](https://img.shields.io/badge/DOI-10.1038%2Fs41586--020--2649--2-blue)](
 https://doi.org/10.1038/s41586-020-2649-2)
 [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/numpy/numpy/badge)](https://securityscorecards.dev/viewer/?uri=github.com/numpy/numpy)
+[![Typing](https://img.shields.io/pypi/types/numpy)](https://pypi.org/project/numpy/)
 
 
 NumPy is the fundamental package for scientific computing with Python.