Add missing closing tag in BoxHelper.html

docs/api/extras/helpers/BoxHelper.html

@@ -40,8 +40,7 @@
 		<h2>Methods</h2>
 
 		<h3>[method:null update]( [page:Object3D object] )</h3>
-		<div>
-		Updates the helper's geometry to match the dimensions of the [page:Geometry.boundingBox bounding box] of the passed object's geometry.
+		<div>Updates the helper's geometry to match the dimensions of the [page:Geometry.boundingBox bounding box] of the passed object's geometry.</div>
 
 		<h2>Source</h2>