.phpdoc/template: Add meta description

Author: adriendupuis

tools/php_api_ref/.phpdoc/template/class.html.twig

@@ -1,6 +1,9 @@
 {% extends 'base.html.twig' %}
 
 {% block title %}{{ node.name }} | {{ parent() }}{% endblock %}
+{% block meta %}
+    <meta name="description" content="{{ node.summary }}" />
+{% endblock %}
 
 {% block content %}
     {% include 'components/breadcrumbs.html.twig' %}

tools/php_api_ref/.phpdoc/template/interface.html.twig

@@ -1,6 +1,9 @@
 {% extends 'base.html.twig' %}
 
 {% block title %}{{ node.name }} | {{ parent() }}{% endblock %}
+{% block meta %}
+    <meta name="description" content="{{ node.summary }}" />
+{% endblock %}
 
 {% block content %}
     {% include 'components/breadcrumbs.html.twig' %}
@@ -16,7 +19,7 @@
 
     {% if constants is not empty or properties is not empty or methods is not empty %}
         <label class="md-nav__title" for="__toc" title="{{ node.name }}">
-            {{ node.name}}
+            {{ node.name }}
         </label>
     {% endif %}