Use file reference

Author: alamirault

_build/composer.json

@@ -13,10 +13,16 @@
             "symfony/flex": true
         }
     },
+    "repositories": [
+        {
+            "type": "vcs",
+            "url": "git@github.com:alamirault/docs-builder.git"
+        }
+    ],
     "require": {
         "php": ">=8.1",
         "symfony/console": "^6.2",
         "symfony/process": "^6.2",
-        "symfony-tools/docs-builder": "^0.18"
+        "symfony-tools/docs-builder": "dev-feature/add-file-reference as 0.19"
     }
 }