Update Box3.html (#23320)

Fix typo

docs/api/en/math/Box3.html

@@ -236,7 +236,7 @@
 		<h3>[method:this set]( [param:Vector3 min], [param:Vector3 max] )</h3>
 		<p>
 		[page:Vector3 min] - [page:Vector3] representing the lower (x, y, z) boundary of the box.<br />
-		[page:Vector3 max] - [page:Vector3] representing the lower upper (x, y, z) boundary of the box.<br /><br />
+		[page:Vector3 max] - [page:Vector3] representing the upper (x, y, z) boundary of the box.<br /><br />
 
 		Sets the lower and upper (x, y, z) boundaries of this box.<br>
 		Please note that this method only copies the values from the given objects.