docs: fix a few typos

closes #1239

Author: Foxandxss

public/docs/ts/latest/cookbook/set-document-title.jade

@@ -34,7 +34,7 @@ code-example(format='')
 :marked
   ## Use the *Title* service
   Fortunately, Angular 2 bridges the gap by providing a `Title` service as part of the *Browser platform*.
-  The [Title](../api//platform/browser/Title-class.html) service is a simple class that provides an API
+  The [Title](../api/platform/browser/Title-class.html) service is a simple class that provides an API
   for getting and setting the current HTML document title:
 
   * `getTitle() : string` — Gets the title of the current HTML document.

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

@@ -439,7 +439,7 @@ a(id="no-filter-pipe")
   We might sort the list by hero `name` and `planet` origin properties something like this:
 code-example(format="." language="html")
   <!-- NOT REAL CODE! -->
-  <div *ngFor="#hero of heroes | orderBy:'name,planet'"></div>
+  <div *ngFor="let hero of heroes | orderBy:'name,planet'"></div>
 :marked
   We identify the sort fields by text strings, expecting the pipe to reference a property value by indexing
   (e.g., `hero['name']`).