fix(curriculum): add new test case to Cafe Menu step 20 (freeCodeCamp#57890)

Author: Agung1606

curriculum/challenges/english/14-responsive-web-design-22/learn-basic-css-by-building-a-cafe-menu/5f356ed6cf6eab5f15f5cfe6.md

@@ -37,6 +37,11 @@ Your `div` tag should be nested in the `body`.
 assert.equal(document.querySelector('div')?.parentElement?.tagName, 'BODY');
 ```
 
+You should move all the other elements inside the new `div`.
+
+```js
+assert.lengthOf(document.querySelector('body > div#menu > main')?.children, 3);
+```
 
 # --seed--
 

curriculum/challenges/english/25-front-end-development/workshop-cafe-menu/5f356ed6cf6eab5f15f5cfe6.md

@@ -37,6 +37,11 @@ Your `div` tag should be nested in the `body`.
 assert.equal(document.querySelector('div')?.parentElement?.tagName, 'BODY');
 ```
 
+You should move all the other elements inside the new `div`.
+
+```js
+assert.lengthOf(document.querySelector('body > div#menu > main')?.children, 3);
+```
 
 # --seed--