Add David as author as he now gived the course (#535)

Co-authored-by: Sebastien Ponce <[email protected]>

Author: sponce

Diff for: talk/setup.tex

@@ -405,7 +405,7 @@
 %%%%%%%%%%%%%%%%%%
 
 \title{HEP \cpp course}
-\author[B. Gruber, S. Hageboeck, S. Ponce]{B. Gruber, S. Hageboeck, S. Ponce \\ \texttt{[email protected]}}
+\author[D. Chamont, B. Gruber, S. Hageboeck, S. Ponce]{D.Chamont, B. Gruber, S. Hageboeck, S. Ponce \\ \texttt{[email protected]}}
 \institute{CERN}
 \date{\today}
 \pgfdeclareimage[height=0.5cm]{cernlogo}{CERN-logo.jpg}