Update presentations.md

Author: jrudoler

presentations.md

@@ -22,7 +22,7 @@ Get on the [listserv for announcements](https://groups.google.com/forum/#!forum/
 | Nov 11     | Riley DeHaan | TBD   |
 | Nov 18     | Ansh Soni  | TBD   |
 | Nov 25     | Mialy Rasetarinera | TBD   |
-| Dec 2      | TBD    | TBD   |
+| Dec 2      | Yihao Li  | TBD   |
 | Dec 9      | TBD    | TBD   |
 | Dec 16     | TBD    | TBD   |