title: brew doctor Error: "No available formula with the name "pkg-config" "
body: <p>I just installed Homebrew on Windows using the Linux Bash Shell but I have this error when I run <code>brew doctor</code>  :</p>
  
  <blockquote>
    <p>Error: No available formula with the name "pkg-config"</p>
  </blockquote>
  
  <p>what can i do?</p>