fix: add missing location property names

- these missing property names mean that when the api docs are built the releasing member of the learning team needs to go in and manually fill in the property names in the json that is outputted

Author: jaredgalanis

packages/@ember/routing/location.ts

@@ -73,7 +73,7 @@ export default interface Location {
 
   /**
    * The current URL.
-   * @property
+   * @property currentURL
    * @type String
    * @public
    */
@@ -83,6 +83,7 @@ export default interface Location {
    * Sets the current URL. Calling `setURL` will not trigger `onUpdateURL`
    * callbacks.
    *
+   * @property setURL
    * @public
    * @method
    * @param {String} url the new URL to update to.
@@ -93,6 +94,7 @@ export default interface Location {
    * Replace the current URL (optional). Calling `replaceURL` will not trigger
    * `onUpdateURL` callbacks.
    *
+   * @property replaceURL
    * @public
    * @method
    * @param {String} url the new URL to replace the current URL with.
@@ -109,6 +111,7 @@ export default interface Location {
   /**
    * Formats url to be placed into href attribute.
    *
+   * @property formatURL
    * @public
    * @method
    * @param {String} url the url to format