Metadata corrections needed for Ngan Nguyen

Most papers listed on https://aclanthology.org/people/ngan-nguyen/ should have the author name expanded to Ngan Luu-Thuy Nguyen or Ngan L.T. Nguyen.

Start with the Ngan Nguyen author page at https://aclanthology.org/people/ngan-nguyen/ and identify the paper metadata records using the shortened name. Update the affected records so the author is consistently listed as Ngan Luu-Thuy Nguyen or Ngan L.T. Nguyen, then verify the author page reflects the corrections.

由索引模型根据 Issue 内容生成。