fix(curriculum): update description for step 5 of spam filter project (#53975)

curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/641cdf57c3f7ee276e1d9b32.md

@@ -7,7 +7,13 @@ dashedName: step-5
 
 # --description--
 
-Back in your event listener, you need to update the text of the `result` element. 
+Back in your event listener, you need to update the text of the `result` element. You can use a `ternary` operator to achieve this task.
+
+Here is an example of assigning the result of a ternary operator to an element's text content:
+
+```js
+el.textContent = condition ? "Use this text if the condition is true" : "Use this text if the condition is false";
+```
 
 After the `if` statement, use a ternary operator to check the truthiness of calling `isSpam()` with `messageInput.value` as the argument. If true, set the `textContent` property on the `result` element to `Oh no! This looks like a spam message.`. Otherwise, set it to `This message does not seem to contain any spam.`