In the documentation mention that UVs are Vector2s

- The current docs have a dead link to a UV page (presumably that was a class once upon a time)
- A peek here suggests they are Vector2s: https://github.com/mrdoob/three.js/blob/master/examples/jsm/utils/UVsDebug.js

docs/api/en/core/Geometry.html

@@ -95,7 +95,7 @@
 		<h3>[property:Array faceVertexUvs]</h3>
 		<p>
 		Array of face [link:https://en.wikipedia.org/wiki/UV_mapping UV] layers, used for mapping textures onto the geometry.<br />
-		Each UV layer is an array of [page:UV]s matching the order and number of vertices in faces.<br /><br />
+		Each UV layer is an array of [page:Vector2]s matching the order and number of vertices in faces.<br /><br />
 		To signal an update in this array, [page:Geometry Geometry.uvsNeedUpdate] needs to be set to true.
 		</p>