Fix typo in README for Observer pattern

docs: add xdvrx1 as a contributor

The log message in the Orcs class should say orcs instead of hobbits.

This is correct in the code example but wrong in the README.

docs: add xdvrx1 as a contributor

docs: add RayYH as a contributor

fix word typo

docs: add ashishtrivedi16 as a contributor

#1321 Transaction script model implementation

Add logging in API Gateway

Co-authored-by: NIlkka Seppälä <iluwatar@users.noreply.github.com>

Co-authored-by: NIlkka Seppälä <iluwatar@users.noreply.github.com>