Update publications.md

Author: nipunbatra

_pages/publications.md

@@ -10,7 +10,7 @@ description: "Discovery consists of looking at the same thing as everyone else a
 
 ##### Vartalaap: what drives #airquality discussions: politics, pollution or pseudo-science?
 
-Rishiraj Adhikary, Zeel B. Patel, Tanmay Srivastava, Nipun Batra, Mayank Singh, Udit Bhatia, and Sarath Guttikunda.  Proceedings of the ACM on Human-Computer Interaction 5, no. CSCW1 (2021)[[PDF]((../papers/2021/vartalaap.pdf))]
+Rishiraj Adhikary, Zeel B. Patel, Tanmay Srivastava, Nipun Batra, Mayank Singh, Udit Bhatia, and Sarath Guttikunda.  Proceedings of the ACM on Human-Computer Interaction 5, no. CSCW1 (2021)[[PDF](../papers/2021/vartalaap.pdf)]
 
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