Fix ViewRegistry::addViewProvider documentation

src/view-registry.coffee

@@ -70,24 +70,15 @@ class ViewRegistry
   # workspace what view constructor it should use to represent them:
   #
   # ```coffee
-  # atom.views.addViewProvider
-  #   modelConstructor: TextEditor
-  #   viewConstructor: TextEditorElement
+  # atom.views.addViewProvider TextEditor, (textEditor) ->
+  #   textEditorElement = new TextEditorElement
+  #   textEditorElement.initialize(textEditor)
+  #   textEditorElement
   # ```
   #
-  # * `providerSpec` {Object} containing the following keys:
-  #   * `modelConstructor` Constructor {Function} for your model.
-  #   * `viewConstructor` (Optional) Constructor {Function} for your view. It
-  #     should be a subclass of `HTMLElement` (that is, your view should be a
-  #     DOM node) and have a `::setModel()` method which will be called
-  #     immediately after construction. If you don't supply this property, you
-  #     must supply the `createView` property with a function that never returns
-  #     `undefined`.
-  #   * `createView` (Optional) Factory {Function} that must return a subclass
-  #     of `HTMLElement` or `undefined`. If this property is not present or the
-  #     function returns `undefined`, the view provider will fall back to the
-  #     `viewConstructor` property. If you don't provide this property, you must
-  #     provider a `viewConstructor` property.
+  # * `modelConstructor` Constructor {Function} for your model.
+  # * `createView` Factory {Function} that is passed an instance of your model
+  #   and must return a subclass of `HTMLElement` or `undefined`.
   #
   # Returns a {Disposable} on which `.dispose()` can be called to remove the
   # added provider.