Fix @extends tags in documentation: Only the immediately following class is required.

src/item/Layer.js

@@ -39,7 +39,6 @@ var Layer = this.Layer = Group.extend({
 	 * {@link Project#layers}.
 	 * 
 	 * @extends Group
-	 * @extends Item
 	 * @constructs Layer
 	 */
 	initialize: function(items) {

src/path/CompoundPath.js

@@ -39,7 +39,6 @@ var CompoundPath = this.CompoundPath = PathItem.extend({
 	 * {@link Item#children} list.
 	 * 
 	 * @extends PathItem
-	 * @extends Item
 	 */
 	initialize: function(paths) {
 		this.base();

src/path/Path.js

@@ -40,7 +40,6 @@ var Path = this.Path = PathItem.extend({
 	 * 
 	 * @class The Path item represents a path in a Paper.js project.
 	 * @extends PathItem
-	 * @extends Item
 	 * @constructs Path
 	 */
 	initialize: function(segments) {

src/text/PointText.js

@@ -36,7 +36,6 @@ var PointText = this.PointText = TextItem.extend({
 	 * characters contained in it.
 	 * 
 	 * @extends TextItem
-	 * @extends Item
 	 */
 	initialize: function(point) {
 		this.base();