fix DOI in reference

Author: danieldouglas92

doc/sphinx/references.bib

@@ -12115,7 +12115,7 @@ @article{thba22
 author={C. Thieulot and W. Bangerth},
 title={On the choice of finite element for applications in geodynamics},
 journal={Solid Earth},
-doi={10.5194/se-13-1-2022},
+doi={10.5194/se-13-229-2022},
 volume={13},
 year={2022}}