Fix formatting in README.md and update project categories

Author: sjh26

PW45_2026_Boston/README.md

@@ -5,14 +5,14 @@ redirect_from:
 - /PW_45_2026_Boston/Readme.html
 
 project_categories:
-- AI
 - IGT and Training
 - DICOM
 - VR/AR and Rendering
 - Segmentation / Classification / Landmarking
 - Quantification and Computation
 - Cloud / Web
 - Infrastructure
+- AI
 ---
 
 # Welcome to the web page for the 45th Project Week!