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

curriculum/challenges/english/08-data-analysis-with-python/numpy/basics-of-numpy.english.md

@@ -7,21 +7,41 @@ videoId: f9QrZrKQMLI
 ---
 
 ## Description
+
 <section id='description'>
 </section>
 
 ## Tests
+
 <section id='tests'>
 
-```yml
+````yml
 question:
-  text: 'What will the following code print?:<pre>b = np.array([[1.0,2.0,3.0],[3.0,4.0,5.0]])<br>print(b)</pre>'
+  text: |
+    What will the following code print?
+
+    ```python
+    b = np.array([[1.0,2.0,3.0],[3.0,4.0,5.0]])
+    print(b)
+    ```
   answers:
-    - '<pre>[[1.0 2.0 3.0]<br>[3.0 4.0 5.0]]<pre>'
-    - '<pre>[[1. 2. 3.]<br>[3. 4. 5.]]<pre>'
-    - '<pre>[[1. 3.]<br>[2. 4.]<br>[3. 5.]<pre>'
+    - |
+      ```python
+      [[1.0 2.0 3.0]
+      [3.0 4.0 5.0]]
+      ```
+    - |
+      ```python
+      [[1. 2. 3.]
+      [3. 4. 5.]]
+      ```
+    - |
+      ```python
+      [[1. 3.]
+      [2. 4.]
+      [3. 5.]
+      ```
   solution: 2
-```
+````
 
 </section>
-