Solution use-the-conditional-ternary-operator.english.md (#18747)

* Update use-the-conditional-ternary-operator.english.md

* Use strict equals

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/use-the-conditional-ternary-operator.english.md

@@ -61,6 +61,8 @@ checkEqual(1, 2);
 <section id='solution'>
 
 ```js
-// solution required
+function checkEqual(a, b) {
+  return a === b ? true : false;
+}
 ```
 </section>