message: Improve rendering
diff: <div class="pure-u-1 pure-u-sm-7-24 pure-u-md-5-24">
  <div class="pure-menu package-menu">
  <ul class="pure-menu-list">
  - {%- if details.doc_coverage -%}
  + {%- if details.documented_items and details.total_items -%}
  + {% set percent = details.documented_items * 100 / details.total_items %}
  <li class="pure-menu-heading">Documentation<br>coverage</li>
  - <li class="pure-menu-item" style="text-align:center;">{{ details.doc_coverage | round(precision=2) }} %</li>
  + <li class="pure-menu-item" style="text-align:center;"><b>{{ percent | round(precision=2) }} %</b><br>
  + <span style="font-size: 13px;"><b>{{ details.documented_items }}</b> out of <b>{{ details.total_items }}</b> items documented</span>
  + </li>
  {%- endif -%}
  {# List the release author's names and a link to their docs.rs profile #}
  <li class="pure-menu-heading">Authors</li>
  