Adding myself back to reviews

Author: karthiknadig

.github/assign-reviewers.yml

@@ -14,6 +14,7 @@ team:
 # Comment yourself out when you will be unavailable for reviews for more than a
 # couple of days.
 reviewers:
+ - karthiknadig
  - karrtikr
  - kimadeline
  - paulacamargo25