chore(curriculum): Statistics Calculator add quotes to strings (freeCodeCamp#55686)

Co-authored-by: Huyen Nguyen <[email protected]>

Author: Supravisor

curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-advanced-array-methods-by-building-a-statistics-calculator/63507b5ac8a55134223374c7.md

@@ -19,7 +19,7 @@ Your `calculate` function should have a `value` variable.
 assert.match(calculate.toString(), /value/);
 ```
 
-Your `calculate` function should call `document.querySelector()` with `#numbers` as the argument.
+Your `calculate` function should call `document.querySelector()` with `"#numbers"` as the argument.
 
 ```js
 assert.match(calculate.toString(), /document\.querySelector\(\s*("|')#numbers\1\s*\)/)