quiz/js: tidy up

packages/quiz/questions/describe-event-capturing/en-US.mdx

@@ -2,7 +2,7 @@
 title: Describe event capturing
 ---
 
-**TL;DR**
+## TL;DR
 
 Event capturing is a lesser-used counterpart to [event bubbling](/questions/quiz/describe-event-bubbling) in the DOM event propagation mechanism. It follows the opposite order, where an event triggers first on the ancestor element and then travels down to the target element.
 

packages/quiz/questions/explain-ajax-in-as-much-detail-as-possible/en-US.mdx

@@ -2,7 +2,7 @@
 title: Explain Ajax in as much detail as possible.
 ---
 
-**TL;DR**
+## TL;DR
 
 Ajax (asynchronous JavaScript and XML) facilitates asynchronous communication between the client and server, enabling dynamic updates to web pages without reloading. It uses techniques like `XMLHttpRequest` or the `fetch` API to send and receive data in the background. In modern web applications, `fetch` API is more commonly used to implement Ajax.
 

packages/quiz/questions/how-do-you-abort-a-web-request-using-abortcontrollers/en-US.mdx

@@ -2,7 +2,7 @@
 title: How do you abort a web request using `AbortController`?
 ---
 
-**TL;DR**
+## TL;DR
 
 `AbortController` is a Web API for canceling ongoing asynchronous operations like fetch requests.
 

packages/quiz/questions/what-are-javascript-object-getters-and-setters-for/metadata.json

@@ -1,5 +1,5 @@
 {
-  "slug": "what-are-javascript-object-getters-and-settes-for",
+  "slug": "what-are-javascript-object-getters-and-setters-for",
   "languages": [],
   "companies": [],
   "premium": false,

packages/quiz/questions/what-are-the-advantages-and-disadvantages-of-using-ajax/en-US.mdx

@@ -2,7 +2,7 @@
 title: What are the advantages and disadvantages of using Ajax?
 ---
 
-**TL;DR**
+## TL;DR
 
 ### Advantages:
 

packages/quiz/questions/what-are-the-differences-between-xmlhttprequest-and-fetch/en-US.mdx

@@ -2,7 +2,7 @@
 title: What are the differences between `XMLHttpRequest` and `fetch`?
 ---
 
-**TL;DR**
+## TL;DR
 
 `XMLHttpRequest` (XHR) and `fetch` API are both used for asynchronous HTTP requests in JavaScript. `fetch` offers a cleaner syntax, promise-based approach, and more modern feature set compared to XHR.
 

packages/quiz/questions/what-are-the-various-ways-to-create-objects-in-javascript/en-US.mdx

@@ -2,7 +2,7 @@
 title: What are the various ways to create objects in JavaScript?
 ---
 
-**TL;DR**
+## TL;DR
 
 Creating objects in JavaScript offers several methods: