Clarification and use callbacks in examples

src/ol/featureloader.js

@@ -19,8 +19,8 @@ let withCredentials = false;
  * the area to be loaded, a `{number}` representing the resolution (map units per pixel), an
  * {@link module:ol/proj/Projection} for the projection, an optional success callback that should get
  * the loaded features passed as an argument and an optional failure callback with no arguments. If
- * the callbacks are not used, the corresponding vector source will not fire `'featuresloadstart'`,
- * `'featuresloadend'` and `'featuresloaderror'` events. `this` within the function is bound to the
+ * the callbacks are not used, the corresponding vector source will not fire `'featuresloadend'` and
+ * `'featuresloaderror'` events. `this` within the function is bound to the
  * {@link module:ol/source/Vector} it's called from.
  *
  * The function is responsible for loading the features and adding them to the

src/ol/source/Vector.js

@@ -72,7 +72,7 @@ export class VectorSourceEvent extends Event {
  * @property {import("../featureloader.js").FeatureLoader} [loader]
  * The loader function used to load features, from a remote source for example.
  * If this is not set and `url` is set, the source will create and use an XHR
- * feature loader. The `'featuresloadstart'`, `'featuresloadend'` and `'featuresloaderror'` events
+ * feature loader. The `'featuresloadend'` and `'featuresloaderror'` events
  * will only fire if the `success` and `failure` callbacks are used.
  *
  * Example: