title: When changing language the route is appending to instead of just changing with chosen language
body: <p>When I am changing the language the route gets appended to previous routes instead of just changing the language for exe- <code>http://localhost:4200/en/about-us</code> if change the language to he then it becomes <code>http://localhost:4200/he/about-us/about-us</code>
  I am changing the language like this.</p>
  <pre><code>constructor(
      public translate: TranslateService,
      private localize: LocalizeRouterService
  ){}
  chooseLanguage('he') { 
          this.translate.use(lng);
          this.localize.changeLanguage(lng)
  }
  </code></pre>
  <p>Please let me know if I am doing something wrong</p>