docs: add missing funding badges (#1461)

Added extra funding badges

Author: ariostas

README.md

@@ -7,11 +7,14 @@
 [![Continuous integration tests](https://github.com/scikit-hep/uproot5/actions/workflows/build-test.yml/badge.svg)](https://github.com/scikit-hep/uproot5/actions)
 
 [![Scikit-HEP](https://scikit-hep.org/assets/images/Scikit--HEP-Project-blue.svg)](https://scikit-hep.org/)
-[![NSF-1836650](https://img.shields.io/badge/NSF-1836650-blue.svg)](https://nsf.gov/awardsearch/showAward?AWD_ID=1836650)
 [![DOI 10.5281/zenodo.4340632](https://zenodo.org/badge/DOI/10.5281/zenodo.4340632.svg)](https://doi.org/10.5281/zenodo.4340632)
 [![Documentation](https://img.shields.io/badge/docs-online-success)](https://uproot.readthedocs.io/)
 [![Gitter](https://img.shields.io/badge/chat-online-success)](https://gitter.im/Scikit-HEP/uproot)
 
+[![NSF-1836650](https://img.shields.io/badge/NSF-1836650-blue.svg)](https://nsf.gov/awardsearch/showAward?AWD_ID=1836650)
+[![NSF-2121686](https://img.shields.io/badge/NSF-2121686-blue.svg)](https://nsf.gov/awardsearch/showAward?AWD_ID=2121686)
+[![NSF-2323298](https://img.shields.io/badge/NSF-2323298-blue.svg)](https://nsf.gov/awardsearch/showAward?AWD_ID=2323298)
+
 Uproot is a library for reading and writing [ROOT files](https://root.cern/) in pure Python and NumPy.
 
 Unlike the standard C++ ROOT implementation, Uproot is only an I/O library, primarily intended to stream data into machine learning libraries in Python. Unlike PyROOT and root_numpy, Uproot does not depend on C++ ROOT. Instead, it uses Numpy to cast blocks of data from the ROOT file as Numpy arrays.