Typo (#2880)

docs(appmodule): "bootstrap's" typo

Author: oferze

public/docs/ts/latest/guide/appmodule.jade

@@ -107,7 +107,7 @@ l-main-section
 +makeExample('setup/ts/app/main.ts','','app/main.ts')(format='.')
 :marked
   This code creates a browser platform for dynamic (JiT) compilation and
-  bootstrap's the `AppModule` described above.
+  bootstraps the `AppModule` described above.
 
   The _bootstrapping_ process sets up the execution environment,
   digs the _root_ `AppComponent` out of the module's `bootstrap` array,