doc: DataTexture3D: add wrapR property

docs/api/en/textures/DataTexture3D.html

@@ -38,6 +38,14 @@
     See the base [page:Texture Texture] class for common properties.
     </p>
 
+    <h3>[property:number wrapR]</h3>
+		<p>
+		This defines how the texture is wrapped in the depth direction.<br />
+		The default is [page:Textures THREE.ClampToEdgeWrapping], where the edge is clamped to the outer edge texels.
+		The other two choices are [page:Textures THREE.RepeatWrapping] and [page:Textures THREE.MirroredRepeatWrapping].
+		See the [page:Textures texture constants] page for details.
+		</p>
+
 		<h2>Methods</h2>
 
 		<p>