Update README.md

Author: alanedelman

README.md

@@ -94,6 +94,7 @@ Final Project reports due: May 11
 
 # HW
 |#|HW| Due Date |
+|-|-|------|
 |1| [PINNs](https://github.com/mitmath/18337/blob/master/18.337%20%202026%20homework%201.pdf)| 2/11/2026 |
 |2| [Performance etc](https://github.com/mitmath/18337/blob/master/18.337%202026%20homework%202.md)|  Thurs 3/5/2026 ||