docs(team): update gkalpak's info (angular#3161)

Author: gkalpak

harp.json

@@ -499,10 +499,12 @@
       "gkalpak": {
         "name": "Georgios Kalpakas",
         "picture": "/resources/images/bios/gkalpak.jpg",
+        "twitter": "gkalpakas",
         "website": "https://github.com/gkalpak",
         "bio": "George is a Software Engineer with a passion for chess, robotics and automating stuff. He has a strong need to know how things work (so if you already know, he'd love to have a talk with you). He has been a member of the AngularJS team since 2014. When not doing geeky stuff, he is probably trying to convince his wife and kids to apply programming principles in real life. (Or is it the other way around?)",
         "type": "Community"
       },
+      
       "kapunahelewong": {
         "name": "Kapunahele Wong",
         "picture": "/resources/images/bios/kapunahelewong.jpg",