fix typo

index.md

@@ -33,7 +33,7 @@ Bakh Khoussainov – Chair (UESTC, China)
 
 **Proof theory and philosophy of mathematics:**
 
-- Febrong Liu – session chair, (Tsinghua University)
+- Fenrong Liu – session chair, (Tsinghua University)
 - Hitoshi Omori (Tohoku University, Japan)
 - Heinrich Wanshing (Ruhr University Bochum, Germany; Tohoku University, Japan)
 
@@ -41,7 +41,7 @@ Bakh Khoussainov – Chair (UESTC, China)
 
 - Rizos Sklinos – session chair, (CAS, Beijing, China)
 - Jinhe Ye (Nanjing University, China)
-- Artem Chernikov (CMU, USA)
+- Artem Chernikov (University of Maryland, USA)
 - Dugald Macpherson (Leeds University, UK)
 - Sergey Goncharov (Novisibirsk State University, Russia)