Comments failed on yaml

Describe the bug When use highlightjs-line-numbers.js , some comments cannot be detected on YAML. No <span class="hljs-comment"></span> for these comments

To Reproduce

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.15.8/styles/xcode.min.css"
  integrity="sha256-fjO4CUN/XJTfsDmlIBojCwY4EV94jfOJpPzqd19TSko=" crossorigin="anonymous" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.15.8/highlight.min.js"
  integrity="sha256-js+I1fdbke/DJrW2qXQlrw7VUEqmdeFeOW37UC0bEiU=" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/highlightjs-line-numbers.js/2.7.0/highlightjs-line-numbers.min.js"
  integrity="sha256-3f4oLge37B7QacI/ksfIIW3bPxh5xOli03/VKtvRWgU=" crossorigin="anonymous"></script>
<style>
  td.hljs-ln-numbers {
    text-align: center;
    color: #ccc;
    border-right: 1px solid #AAA;
    vertical-align: top;
    padding-right: 5px;
  }
  td.hljs-ln-code {
    padding-left: 10px;
  }
</style>

<script>
  hljs.initHighlightingOnLoad();
  hljs.initLineNumbersOnLoad();
</script>

<pre><code class="yaml" ># 名前等
date: 令和1年6月7日現在
name_kana: りれき　たろう
name: 履歴　太郎
birth_day: 平成6年6月7日 (満 25 歳)
gender: 男
cell_phone: 090-1234-5678
email: rireki-taro@example.org
# 写真をアップロードした場合、このフィールドが無視されます
photo: https://cdn.jsdelivr.net/gh/jerrywdlee/yaml_cv@master/photo.jpg

# 住所
address_kana: とうきょうとちよだくちよだ
address: 東京都千代田区千代田1-1-1
address_zip: 100-0001
tel: 03-000-000
# fax: 0120-111-XXX
# 連絡先
# address_kana2: ほっかいどう わっかないし そうやみさき
# address2: 北海道稚内市宗谷岬
# address_zip2: 098-6758
# tel2: 0120-222-XXX
# fax2: 0120-333-XXX
address2: 同上

# 学歴
education:
  - 
    year: 平成21
    month: 4
    value: 履歴高校普通科　入学
  - 
    year: 平成24
    month: 3
    value: 同　卒業
  - 
    year: 平成24
    month: 4
    value: 履歴大学履歴書学部　入学
  - 
    year: 平成28
    month: 3
    value: 同　卒業

# 本人希望記入欄
request: |
  貴社の規定に従います。</code></pre>

Expected behavior all # comments will have <span class="hljs-comment"></span>

Screenshots

with line number
without line number

Desktop (please complete the following information):

OS: Mac OS
Browser chrome
Version highlight.js/9.15.8 highlightjs-line-numbers.js/2.7.0

Smartphone (please complete the following information):

Device: [e.g. iPhone6]
OS: [e.g. iOS8.1]
Browser [e.g. stock browser, safari]
Version [e.g. 22]

Additional context Add any other context about the problem here.

wcoder / highlightjs-line-numbers.js

Comments failed on yaml #68