fix date in myst config

Author: parmentelat

notebooks/myst.yml

@@ -6,7 +6,7 @@ project:
   # in any case as of now 2024 june the title is used for the tooltip too (a bit silly)
   # and I can't see where this is used
   description: "Python - various activities: exos, TPs and HOWTOs"
-  # this one causes additional buttons to be shown 
+  # this one causes additional buttons to be shown
   # in the upper right area (close to the github button)
   license: CC-BY-NC-SA-4.0
   # inserted under the title
@@ -20,7 +20,7 @@ project:
     - pandas
     - matplotlib
     - Jupyter
-  date: 2025-09-3
+  date: 2026-01-19
   # bibliography: []
 
 site: