Fix the kubectl-nodepool-replicas-wait script to sleep correctly in the loop (#548)

Description / Motivation: The while loop is incorrectly closed before the sleep call.

Co-authored-by: Chithresh Azad <[email protected]>

Author: chithreshazad

tests/tekton-resources/tasks/generators/karpenter/kubectl-nodepool-replicas-wait.yaml

@@ -90,7 +90,6 @@ spec:
         
         echo "$(date): Not all availability zones have reached target replicas. Waiting ${CHECK_INTERVAL} seconds before next check..."
 
-      done
         sleep $CHECK_INTERVAL
       done