planning/tpac-2025: [CSSWG meeting at TPAC 2025] fix link

Author: dbaron

planning/tpac-2025.txt

@@ -1,6 +1,6 @@
 ====== CSSWG meeting at TPAC 2025 ======
 
-[[https://www.w3.org/2025/11/TPAC//|TPAC 2025]] is scheduled for **10-14 November 2025** in Kobe, Japan with options for both in-person and remote participation. 
+[[https://www.w3.org/2025/11/TPAC/|TPAC 2025]] is scheduled for **10-14 November 2025** in Kobe, Japan with options for both in-person and remote participation. 
 
   * CSSWG F2F: **Thursday-Friday, 13-14 September 09:00-18:00**.