docs: translate Basics in Depth menu

Author: n0mad-d3v

i18n/fr/docusaurus-theme-classic/footer.json

@@ -16,7 +16,7 @@
     "description": "The label of footer link with label=Getting Started linking to /docs/getting-started/overview"
   },
   "link.item.label.Basics in Depth": {
-    "message": "Basics in Depth",
+    "message": "Avancé",
     "description": "The label of footer link with label=Basics in Depth linking to /docs/basics-in-depth/services"
   },
   "link.item.label.Tooling": {