fix(docs): switch Zenodo badge to shields.io for reliability

Author: blalterman

README.rst

@@ -144,7 +144,7 @@ See `CITATION.rst`_ for instructions on citing SolarWindPy.
    :target: ./LICENSE
 .. |Black Code| image:: https://img.shields.io/badge/code%20style-black-000000.svg
    :target: https://github.com/psf/black
-.. |Zenodo| image:: https://zenodo.org/badge/DOI/10.5281/zenodo.17042839.svg
+.. |Zenodo| image:: https://img.shields.io/badge/DOI-10.5281%2Fzenodo.17042839-blue.svg
   :target: https://doi.org/10.5281/zenodo.17042839
 .. |PyPI| image:: https://img.shields.io/pypi/v/solarwindpy.svg
    :target: https://pypi.org/project/solarwindpy/