Correct 3.3.2 release year

It was off by 1.

Closes wxWidgets#26257.

Author: vadz

docs/changes.txt

@@ -252,7 +252,7 @@ Changes in behaviour which may result in build errors
   make sense when wxGLCanvas may use either EGL or GLX.
 
 
-3.3.2: (released 2025-03-03)
+3.3.2: (released 2026-03-03)
 ----------------------------
 
 Please note that this is a list of changes compared to 3.2.10, the full list of