Update HemisphereLightHelper.html

docs/api/extras/helpers/HemisphereLightHelper.html

@@ -35,7 +35,7 @@
 
 		<h3>[property:HemisphereLight light]</h3>
 		<div>
-		Contains the HemisphereLight
+		Contains the HemisphereLight.
 		</div>