Update BufferGeometry.html

Fix default value in documentation

docs/api/en/core/BufferGeometry.html

@@ -149,7 +149,7 @@
 			Used to control the morph target behavior; when set to true, the morph target data is treated as relative changes to the base geometry,
 			instead of completely replacing the base geometry data.
 
-			Default is *true*.
+			Default is *false*.
 		</p>
 
 		<h3>[property:String name]</h3>