Update how-jquery-works.md

Author: Krinkle

page/about-jquery/how-jquery-works.md

@@ -29,7 +29,9 @@ This is a basic tutorial, designed to help you get started using jQuery. If you
 The `src` attribute in the `<script>` element must point to a copy of jQuery. Download a copy of jQuery from the [Downloading jQuery](http://jquery.com/download/) page and store the `jquery.js` file in the same directory as your HTML file.
 
 <div class="warning">
+
 **Note**: When you download jQuery, the file name may contain a version number, e.g., `jquery-x.y.z.js`. Make sure to either rename this file to `jquery.js` or update the `src` attribute of the `<script>` element to match the file name.
+
 </div>
 
 ### Launching Code on Document Ready
@@ -56,7 +58,9 @@ $( document ).ready(function() {
 ```
 
 <div class="warning">
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 **Note**: The jQuery library exposes its methods and properties via two properties of the <code>window</code> object called <code>jQuery</code> and <code>$</code>. <code>$</code> is simply an alias for <code>jQuery</code> and it's often employed because it's shorter and faster to write.
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 </div>
 
 For example, inside the `ready` event, you can add a click handler to the link:
@@ -123,7 +127,11 @@ The following example illustrates the click handling code discussed above, embed
 
 ### Adding and Removing an HTML Class
 
-<div class="warning">**Important:** You must place the remaining jQuery examples inside the `ready` event so that your code executes when the document is ready to be worked on.</div>
+<div class="warning">
+
+**Important:** You must place the remaining jQuery examples inside the `ready` event so that your code executes when the document is ready to be worked on.
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+</div>
 
 Another common task is adding or removing a class.