users: +numpy (#93)

Author: vstinner

docs/users.rst

@@ -26,6 +26,8 @@ Examples of projects using pythoncapi_compat.h
 * `mypy <https://github.com/python/mypy>`_
   (mypyc,
   `commit <https://github.com/python/mypy/commit/2b7e2df923f7e4a3a199915b3c8563f45bc69dfa>`__)
+* numpy: `pythoncapi-compat Git submodule
+  <https://github.com/numpy/numpy/blob/main/.gitmodules>`_
 * `pybluez <https://github.com/pybluez/pybluez>`_
   (`commit <https://github.com/pybluez/pybluez/commit/5096047f90a1f6a74ceb250aef6243e144170f92>`__)
 * `python-snappy <https://github.com/andrix/python-snappy/>`_