New github action for week3 and week4

Author: Shashankpgit

Learn/week4/post-pydantic.md

@@ -27,7 +27,7 @@ def get_users():
 - **Data location**: URL (query parameters)
 - **Visible**: Data shows in browser address bar
 - **Cacheable**: Browser can cache results
-- **Idempotent**: Calling it multiple times = same result
+- **Idempotent**: Calling it multiple times = same result 
 - **Should NOT modify data**: Only reads
 
 **Real-world example:**

Learn/week5/db-integration.md

@@ -40,7 +40,7 @@ def create_todo(todo: TodoCreate):
     todos_db.append(todo)  # Stored in RAM
     return todo
 
-# Problem: When you restart server...
+# Problem: When you restart server....
 # todos_db = []  # ALL DATA IS GONE! 💥
 ```