Fix some JSDoc issues

Also makes a few minor changes to the template, so it can be used until
we have a new doc generation process. JSDoc output is written to
build/apidoc.

src/ol/ObjectEventType.js

@@ -8,7 +8,7 @@
 export default {
   /**
    * Triggered when a property is changed.
-   * @event module:ol/Object~Event#propertychange
+   * @event module:ol/Object~ObjectEvent#propertychange
    * @api
    */
   PROPERTYCHANGE: 'propertychange'

src/ol/layer/Base.js

@@ -28,7 +28,7 @@ import {assign} from '../obj.js';
  * Abstract base class; normally only used for creating subclasses and not
  * instantiated in apps.
  * Note that with {@link module:ol/layer/Base} and all its subclasses, any property set in
- * the options is set as a {@link module:ol/Object property on the layer object, so
+ * the options is set as a {@link module:ol/Object} property on the layer object, so
  * is observable, and has get/set accessors.
  *
  * @constructor

src/ol/layer/Heatmap.js

@@ -58,7 +58,7 @@ const DEFAULT_GRADIENT = ['#00f', '#0ff', '#0f0', '#ff0', '#f00'];
 /**
  * @classdesc
  * Layer for rendering vector data as a heatmap.
- * Note that any property set in the options is set as a {@link module:ol/Object~BaseObject
+ * Note that any property set in the options is set as a {@link module:ol/Object~BaseObject}
  * property on the layer object; for example, setting `title: 'My Title'` in the
  * options means that `title` is observable, and has get/set accessors.
  *

src/ol/layer/Image.js

@@ -30,7 +30,7 @@ import Layer from '../layer/Layer.js';
  * @classdesc
  * Server-rendered images that are available for arbitrary extents and
  * resolutions.
- * Note that any property set in the options is set as a {@link module:ol/Object~BaseObject
+ * Note that any property set in the options is set as a {@link module:ol/Object~BaseObject}
  * property on the layer object; for example, setting `title: 'My Title'` in the
  * options means that `title` is observable, and has get/set accessors.
  *

src/ol/layer/Tile.js

@@ -35,7 +35,7 @@ import {assign} from '../obj.js';
  * @classdesc
  * For layer sources that provide pre-rendered, tiled images in grids that are
  * organized by zoom levels for specific resolutions.
- * Note that any property set in the options is set as a {@link module:ol/Object~BaseObject
+ * Note that any property set in the options is set as a {@link module:ol/Object~BaseObject}
  * property on the layer object; for example, setting `title: 'My Title'` in the
  * options means that `title` is observable, and has get/set accessors.
  *

src/ol/layer/Vector.js

@@ -80,7 +80,7 @@ const Property = {
 /**
  * @classdesc
  * Vector data that is rendered client-side.
- * Note that any property set in the options is set as a {@link }
+ * Note that any property set in the options is set as a {@link module:ol/Object~BaseObject}
  * property on the layer object; for example, setting `title: 'My Title'` in the
  * options means that `title` is observable, and has get/set accessors.
  *

src/ol/layer/VectorTile.js

@@ -91,7 +91,7 @@ export const RenderType = {
 /**
  * @classdesc
  * Layer for vector tile data that is rendered client-side.
- * Note that any property set in the options is set as a {@link module:ol/Object~BaseObject
+ * Note that any property set in the options is set as a {@link module:ol/Object~BaseObject}
  * property on the layer object; for example, setting `title: 'My Title'` in the
  * options means that `title` is observable, and has get/set accessors.
  *