title: Why does intellij IDEA highlight build.sbt?
body: <p>I've recently create a new project with sbt in IDEA and got this</p>
  
  <p><img src="https://i.stack.imgur.com/E4qBq.png" alt="enter image description here"></p>
  
  <p>What's wrong with it? I have scala plugin installed and enabled and IDEA version is 14.</p>