Fix links in syllabus

src/syllabus.md.hbs

@@ -24,8 +24,8 @@ CS 4110/5110, "Programming Languages and Logics," is a thrilling amusement-park
   - Grading for both homework assignments and exams will have a high standard for precision. Because this class is about formalism, little details matter more than the general gist of the solution.
 - CS 4110 (undergraduate) and CS 5110 (MEng) are mostly the same, except for some extra work in the latter.
 
-[ed]: https://edstem.org/us/courses/9227/discussion/
-[gradescope]: https://www.gradescope.com/courses/297449
+[ed]: https://edstem.org/us/courses/52988/discussion/
+[gradescope]: https://www.gradescope.com/courses/704201
 
 # Organization