.phpdoc/template: escape summary in meta desc

Author: adriendupuis

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

@@ -2,7 +2,7 @@
 
 {% block title %}{{ node.name }} | {{ parent() }}{% endblock %}
 {% block meta %}
-    <meta name="description" content="{{ node.summary }}" />
+    <meta name="description" content="{{ node.summary|escape }}" />
     {{ parent() }}
 {% endblock %}
 

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

@@ -2,7 +2,7 @@
 
 {% block title %}{{ node.name }} | {{ parent() }}{% endblock %}
 {% block meta %}
-    <meta name="description" content="{{ node.summary }}" />
+    <meta name="description" content="{{ node.summary|escape }}" />
     {{ parent() }}
 {% endblock %}