Merge pull request #2411 from philfreo/another-typo

lowercase instance var in example code

index.html

@@ -2061,7 +2061,7 @@ <h2 id="Collection">Backbone.Collection</h2>
     <p>
       <b>jQuery.ajax</b> options can also be passed directly as <b>fetch</b> options,
       so to fetch a specific page of a paginated collection:
-      <tt>Documents.fetch({data: {page: 3}})</tt>
+      <tt>documents.fetch({data: {page: 3}})</tt>
     </p>
 
     <p>