wiki/NaturalDocs says we should be using 'Return:' and not 'Returns:' so this patch is fixing that. Of course, in the process, I came across not a few instances where other ND related whitespace or typos were at odds with a peaceful, uniform OL codebase. No functional changes here, just makin' things pretty.

git-svn-id: http://svn.openlayers.org/trunk/openlayers@4109 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/Vector.js

@@ -357,7 +357,7 @@ OpenLayers.Layer.Vector = OpenLayers.Class(OpenLayers.Layer, {
      * Parameters:
      * evt - {Event} 
      *
-     * Returns:
+     * Return:
      * {<OpenLayers.Feature.Vector>} A feature if one was under the event.
      */
     getFeatureFromEvent: function(evt) {
@@ -372,7 +372,7 @@ OpenLayers.Layer.Vector = OpenLayers.Class(OpenLayers.Layer, {
      * Parameters:
      * featureId - {String} 
      *
-     * Returns:
+     * Return:
      * {<OpenLayers.Feature.Vector>} A feature corresponding to the given
      * featureId
      */