update email

Author: hcedwar

affinity/cpp-20/d0796r2.md

@@ -8,7 +8,7 @@
 
 **Contributors: Patrice Roy, Carl Cook, Jeff Hammond**
 
-**Emails: gordon@codeplay.com, ruyman@codeplay.com, michael@codeplay.com, hcedwar@sandia.gov, rodgert@twrodgers.com, mhoemme@sandia.gov**
+**Emails: gordon@codeplay.com, ruyman@codeplay.com, michael@codeplay.com, hedwards@nvidia.com, rodgert@twrodgers.com, mhoemme@sandia.gov**
 
 **Reply to: gordon@codeplay.com**