PHP API Ref: Factorize symfony_version in base.html.twig

Author: adriendupuis

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

@@ -1,5 +1,7 @@
 {% extends 'layout.html.twig' %}
 
+{% set symfony_version = '5.4' %}
+
 {% block javascripts %}
     {{ parent() }}
 

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

@@ -2,7 +2,7 @@
 
 {% block content %}
     {% include 'components/breadcrumbs.html.twig' %}
-    {% include 'components/class-title.html.twig' with { symfony_version: '5.4' } %}
+    {% include 'components/class-title.html.twig' with { symfony_version: symfony_version } %}
     {% include('components/element-header.html.twig') %}
     {% include 'components/constants.html.twig' %}
     {% include 'components/properties.html.twig' %}