message: Options: Add link to features that use the API
diff: <p>
  <label>
  - <strong>Personal token</strong>, <a href="https://github.com/settings/tokens/new?description=Refined%20GitHub&scopes=repo" target="_blank">found here</a> (some features use the API)<br>
  + <strong>Personal token</strong>, <a href="https://github.com/settings/tokens/new?description=Refined%20GitHub&scopes=repo" target="_blank">found here</a> (<a href="https://github.com/sindresorhus/refined-github/search?q=libs/api" target="_blank">some features</a> use the API)<br>
  <!-- placeholder is set to enable use of :placeholder-shown CSS selector -->
  <input type="text" name="personalToken" spellcheck="false" autocomplete="off" size="40" maxlength="40" pattern="[\da-f]{40}" placeholder=" "></input>
  </label>
  