better special-issue links

Author: uendriss

comsoc-website/_data/specialissues.yml

@@ -1,14 +1,14 @@
 - journal: "Theory and Decision"
   topic: "Special Issue in Honor of Jérôme Lang — Supporting Decisions: Theory and Computation"
   year: 2026
-  volume: "100"
-  url: "https://link.springer.com/collections/ehacefjifa"
+  volume: "100:1"
+  url: "https://link.springer.com/journal/11238/volumes-and-issues/100-1"
 
 - journal: "Social Choice and Welfare"
   topic: "Fair Public Decision Making: Allocating Budgets, Seats, and Probability"
   year: 2025
   volume: "64:1–2"
-  url: "https://link.springer.com/collections/agcbcdedjj"
+  url: "https://link.springer.com/journal/355/volumes-and-issues/64-1"
 
 - journal: "Annals of Mathematics and Artificial Intelligence"
   topic: "Algorithms, Approximation, and Empirical Studies in Behavioral and Computational Social Choice"