Fix errors in timetable

Author: IshaanDesai

timetable.md

@@ -46,11 +46,11 @@
 
 - The Challenge, step one, presentations
 
-## 5.1 – Wed, November 11, 2025
+## 5.1 – Wed, November 12, 2025
 
 - **15** min.: [Introduction to Packaging](https://github.com/Simulation-Software-Engineering/Lecture-Material/blob/main/03_building_and_packaging/intro_slides.md)
-- **75** min.: Packaging a Python Code: [demo](https://github.com/Simulation-Software-Engineering/Lecture-Material/blob/main/03_building_and_packaging/pypi_slides.md), [slides](https://github.com/Simulation-Software-Engineering/Lecture-Material/blob/main/03_building_and_packaging/pypi_slides.md)
+- **75** min.: Packaging a Python Code: [demo](https://github.com/Simulation-Software-Engineering/Lecture-Material/blob/main/03_building_and_packaging/pypi_demo.md), [slides](https://github.com/Simulation-Software-Engineering/Lecture-Material/blob/main/03_building_and_packaging/pypi_slides.md)
 
-## 5.2 – Wed, November 11, 2025
+## 5.2 – Wed, November 12, 2025
 
 - **90** min.: [Exercise on Packaging a Python Code](https://github.com/Simulation-Software-Engineering/Lecture-Material/blob/main/03_building_and_packaging/pypi_exercise.md)