Git25day3

What does this MR do

• Add new data (course edition, post, etc.)
  • I tested locally
  • I read the README.md
• Fix an issue
• Add a new data type
  • I added the schema in schemas/
  • I tested locally
• Merge develop into master
  • I checked that the preview is as intended
• Other

Description

Add git 2025 day 3 slides

courses/2025-03-git.yml

@@ -20,7 +20,7 @@ schedule:
     room: "9.1.2"
     topics:
       - title: "git sul web"
-        # slides: "https://slides.poul.org/2024/git/3-web/"
+        slides: "https://slides.poul.org/2025/git/3-web"
         # record: ""
 
 description: |