Update README.md

Fix typo ("onload" -> "load")

Author: pletcher

README.md

@@ -42,7 +42,7 @@ $(document).ready(function() {
 
 The `$` is a shortcut for `jQuery`, and provides an interface to the library. Every time you see `$`, think `jQuery`.
 
-Once the `onload` event fires (which we've told jQuery to listen for with `$(document).ready()`), the rest of the code will fire. Place the document ready around the jQuery already in `script.js`. Save your changes, and refresh in the browser. You should see the text appear in the browser!
+Once the `load` event fires (which we've told jQuery to listen for with `$(document).ready()`), the rest of the code will fire. Place the document ready around the jQuery already in `script.js`. Save your changes, and refresh in the browser. You should see the text appear in the browser!
 
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