updated dz twitter

Author: dzambon

_data/people.yml

@@ -33,7 +33,7 @@
     website: https://dzambon.github.io/
     github: dzambon
     linkedin: danielezambon
-    twitter: TruckersHitch
+    twitter: dan_zambon
     scholar: JaQGQEwAAAAJ
   img: DZ.jpg
 - id: acini