sublime text 3 error trying to parse file : unexpected character, expected a comma or closing bracket in Packages\User\Default
<p>when I put this code in my Default (Windows).sublime-keymap. Sublime text 3 report an error just like the title said. I don't know how to deal with that. 
Please help me. Thanks a lot.</p>

<blockquote>
  <p>{"keys": ["ctrl+shift+t"], "command": "delete_trailing_spaces"}</p>
</blockquote>

<p><a href="https://i.stack.imgur.com/f86h4.png" rel="nofollow noreferrer">The error</a></p>