PHP API Ref: Avoid {@inheritdoc} as summary

Author: adriendupuis

tools/php_api_ref/.phpdoc/template/components/summary.html.twig

@@ -1,3 +1,3 @@
-{% if node.summary %}
+{% if node.summary and '{@inheritdoc}' != node.summary %}
     <p>{{ node.summary }}</p>
 {% endif %}