优化 document 布局内容 (#423)

_layouts/document.html

@@ -2,12 +2,13 @@
 layout: single
 ---
 
-{% if jekyll.environment == 'production' and page.hits %}
-<img src="https://hits.zkitefly.eu.org/?tag={{ page.url | absolute_url | url_encode }}" alt="Hits" decoding="async">
-{% endif %}
-
-<div class="notice--info">
-  <p>本文由 {{ page.author | default: '未署名用户' }} 创建{% if page.contributors %}，并由 {{ page.contributors | join: ' ' }} 编辑{% endif %}。</p>
-</div>
-
 {{ content }}
+
+{% if page.author or page.contributors or jekyll.environment == 'production' and page.hits  %}
+<script src="{{ '/assets/js/meta.js' | relative_url }}"></script>
+<script>
+  {%- if page.author %}appendMeta("{{ page.author }}", "fas fa-user-pen");{% endif -%}
+  {%- for contributor in page.contributors %}appendMeta("{{ contributor }}", "fas fa-user-pen");{% endfor -%}
+  {%- if jekyll.environment == 'production' and page.hits %}hits("{{ page.url | absolute_url | url_encode }}");{% endif -%}
+</script>
+{% endif %}