Add credits

Related to #2386 and #2420

(cherry picked from commit 9a80225ddfdaf9457c80c97ce4c12aed3377dd24)

CONTRIBUTORS.md

@@ -148,6 +148,7 @@ video tutorials.
  - Alexander Monakov
  - Pierre Morel
  - Jon Morton
+ - moritz-h
  - Pierre Moulon
  - Martins Mozeiko
  - James Murphy
@@ -236,6 +237,7 @@ video tutorials.
  - Corentin Wallez
  - Torsten Walluhn
  - Patrick Walton
+ - Jim Wang
  - Xo Wang
  - Jay Weisskopf
  - Frank Wille