Merge pull request #22 from OPTML-Group/wcs/update_9_26

version fix

Author: wangc168

_data/news.yml

@@ -1,5 +1,5 @@
 - date: 26 September 2025
-  headline: "We released the Welcome2OPTML Booklet as a detailed introduction to our lab and an open invitation for strong prospective candidates to join us in 2026!"
+  headline: "We released the <a href='/pdf/recruitment/Welcome2OPTML.pdf'>Welcome2OPTML Booklet</a> as a detailed introduction to our lab and an open invitation for strong prospective candidates to join us in 2026!"
 
 - date: 18 September 2025
   headline: "Congrats to OPTML on three papers accepted at NeurIPS 2025! One spotlight and two posters, covering LLM unlearning, interpretability, and security on reasoning models!"