Fix typo in Line3 docs

docs/api/en/math/Line3.html

@@ -98,7 +98,7 @@
 		<p>
 		[page:Line3 line]  - [page:Line3] to compare with this one.<br /><br />
 
-		Returns true if both line's [page:.start start] and [page:.end en] points are equal.
+		Returns true if both line's [page:.start start] and [page:.end end] points are equal.
 		</p>
 
 		<h3>[method:Vector3 getCenter]( [param:Vector3 target] )</h3>