fix(challenge): Typo in "OOP: Use an IIFE to Create a Module"

challenges/02-javascript-algorithms-and-data-structures/object-oriented-programming.json

@@ -1032,7 +1032,7 @@
         "We can group these <code>mixins</code> into a module as follows:",
         "<blockquote>let motionModule = (function () {<br>&nbsp;&nbsp;return {<br>&nbsp;&nbsp;&nbsp;&nbsp;glideMixin: function (obj) {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;obj.glide = function() {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;console.log(\"Gliding on the water\");<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;};<br>&nbsp;&nbsp;&nbsp;&nbsp;},<br>&nbsp;&nbsp;&nbsp;&nbsp;flyMixin: function(obj) {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;obj.fly = function() {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;console.log(\"Flying, wooosh!\");<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;};<br>&nbsp;&nbsp;&nbsp;&nbsp;}<br>&nbsp;&nbsp;}<br>}) (); // The two parentheses cause the function to be immediately invoked</blockquote>",
         "Note that you have an <code>immediately invoked function expression</code> (<code>IIFE</code>) that returns an object <code>motionModule</code>. This returned object contains all of the <code>mixin</code> behaviors as properties of the object.",
-        "The advantage of the <code>module</code> pattern is that all of the motion behaviors can be packaged into a single object that can then be used by other parts of your code. Here is a example using it:",
+        "The advantage of the <code>module</code> pattern is that all of the motion behaviors can be packaged into a single object that can then be used by other parts of your code. Here is an example using it:",
         "<blockquote>motionModule.glideMixin(duck);<br>duck.glide();</blockquote>",
         "<hr>",
         "Create a <code>module</code> named <code>funModule</code> to wrap the two <code>mixins</code> <code>isCuteMixin</code> and <code>singMixin</code>. <code>funModule</code> should return an object."