fixes typo

app/assets/javascripts/annotatable.js.coffee

@@ -0,0 +1,20 @@
+App.Annotatable =
+  initialize: ->
+    $("[data-annotatable-type]").each ->
+      $this       = $(this)
+      ann_type    = $this.data("annotatable-type")
+      ann_id      = $this.data("annotatable-id")
+
+      app = new annotator.App()
+        .include(annotator.ui.main, { element: this })
+        .include(annotator.storage.http, { prefix: "", urls: { search: "/annotations/search" } })
+        .include ->
+          beforeAnnotationCreated: (ann) ->
+            ann[ann_type + "_id"] = ann_id
+
+      app.start().then ->
+        app.ident.identity = $('html').data('current-user-id')
+
+        options = {}
+        options[ann_type + "_id"] = ann_id
+        app.annotations.load(options)