fix(curriculum): convert all video challenges to markdown (#39189)

curriculum/challenges/english/08-data-analysis-with-python/numpy/copying-arrays-warning.english.md

@@ -7,16 +7,18 @@ videoId: iIoQ0_L0GvA
 ---
 
 ## Description
+
 <section id='description'>
 </section>
 
 ## Tests
+
 <section id='tests'>
 
-```yml
+````yml
 question:
   text: |
-    What is the value of `a` after running the following code?:
+    What is the value of `a` after running the following code?
 
     ```py
     import numpy as np
@@ -28,13 +30,18 @@ question:
 
   answers:
     - |
-      `[1 2 3 4 5]`
+      ```python
+      [1 2 3 4 5]
+      ```
     - |
-      `[1 2 20 4 5]`
+      ```python
+      [1 2 20 4 5]
+      ```
     - |
-      `[1 20 3 4 5]`
+      ```python
+      [1 20 3 4 5]
+      ```
   solution: 2
-```
+````
 
 </section>
-