Update Dongdong Tian's affiliation (#1640)

Author: seisman

AUTHORS.md

@@ -9,7 +9,7 @@ The following people have contributed code and/or documentation to the project
 (alphabetical by name) and are considered to be "PyGMT Developers":
 
 * [Abhishek Anant](https://twitter.com/itsabhianant) | [0000-0002-5751-2010](https://orcid.org/0000-0002-5751-2010) | Unaffiliated
-* [Dongdong Tian](https://seisman.info/) | [0000-0001-7967-1197](https://orcid.org/0000-0001-7967-1197) | Michigan State University
+* [Dongdong Tian](https://seisman.info/) | [0000-0001-7967-1197](https://orcid.org/0000-0001-7967-1197) | China University of Geosciences
 * [Jamie Quinn](http://jamiejquinn.com) | [0000-0002-0268-7032](https://orcid.org/0000-0002-0268-7032) | University College London
 * [Jiayuan Yao](https://github.com/core-man) | [0000-0001-7036-4238](https://orcid.org/0000-0001-7036-4238) | Nanyang Technological University
 * [Kathryn Materna](https://github.com/kmaterna) | [0000-0002-6687-980X](https://orcid.org/0000-0002-6687-980X) | US Geological Survey

CITATION.cff

@@ -10,7 +10,7 @@ authors:
   orcid: https://orcid.org/0000-0001-6123-9515
 - given-names: Dongdong
   family-names: Tian
-  affiliation: Michigan State University, USA
+  affiliation: China University of Geosciences, China
   orcid: https://orcid.org/0000-0001-7967-1197
 - given-names: Wei Ji
   family-names: Leong