add Jimmy to maintainers (#687)

Author: murali-reddy

MAINTAINER.md

@@ -3,6 +3,7 @@
 ## The team
 
 * Andrew Sy Kim [@andrewsykim](https://github.com/andrewsykim)
-* Bryan Zubrod  [@bzub](https://github.com/bzub)
+* Bryan Zubrod [@bzub](https://github.com/bzub)
 * Joakim Karlsson [@roffe](https://github.com/roffe)
-* Murali Reddy  [@murali-reddy](https://github.com/murali-reddy)
+* Murali Reddy [@murali-reddy](https://github.com/murali-reddy)
+* Jimmy Zhang [@jimmy-zh](https://github.com/jimmy-zh)