docs(router): update the docs of LocationPathStrategy

modules/@angular/common/src/location/path_location_strategy.ts

@@ -25,44 +25,17 @@ import {PlatformLocation, UrlChangeListener} from './platform_location';
  * `PathLocationStrategy` is the default binding for {@link LocationStrategy}
  * provided in {@link ROUTER_PROVIDERS}.
  *
- * If you're using `PathLocationStrategy`, you must provide a provider for
- * {@link APP_BASE_HREF} to a string representing the URL prefix that should
- * be preserved when generating and recognizing URLs.
+ * If you're using `PathLocationStrategy`, you must provide a {@link APP_BASE_HREF}
+ * or add a base element to the document. This URL prefix that will be preserved
+ * when generating and recognizing URLs.
  *
  * For instance, if you provide an `APP_BASE_HREF` of `'/my/app'` and call
  * `location.go('/foo')`, the browser's URL will become
  * `example.com/my/app/foo`.
  *
- * ### Example
- *
- * ```
- * import {Component} from '@angular/core';
- * import {bootstrap} from '@angular/platform-browser/browser';
- * import {
- *   Location,
- *   APP_BASE_HREF
- * } from '@angular/common';
- * import {
- *   ROUTER_DIRECTIVES,
- *   ROUTER_PROVIDERS,
- *   RouteConfig
- * } from '@angular/router';
- *
- * @Component({directives: [ROUTER_DIRECTIVES]})
- * @RouteConfig([
- *  {...},
- * ])
- * class AppCmp {
- *   constructor(location: Location) {
- *     location.go('/foo');
- *   }
- * }
- *
- * bootstrap(AppCmp, [
- *   ROUTER_PROVIDERS, // includes binding to PathLocationStrategy
- *   {provide: APP_BASE_HREF, useValue: '/my/app'}
- * ]);
- * ```
+ * Similarly, if you add `<base href='/my/app'/>` to the document and call
+ * `location.go('/foo')`, the browser's URL will become
+ * `example.com/my/app/foo`.
  *
  * @stable
  */