docs: Add redirect for old config page

Author: pawamoy

mkdocs.yml

@@ -168,6 +168,9 @@ plugins:
     enabled: !ENV [MATERIAL_INSIDERS, false]
     plugins:
     - typeset
+- redirects:
+    redirect_maps:
+      configuration.md: usage/configuration/index.md
 
 extra:
   social:

pyproject.toml

@@ -102,6 +102,7 @@ ci = [
     "mkdocs-llmstxt>=0.1",
     "mkdocs-material>=9.5",
     "mkdocs-minify-plugin>=0.8",
+    "mkdocs-redirects>=1.2",
     "mkdocs-section-index>=0.3",
     "mkdocstrings[python]>=0.29",
     "pydantic>=2.10",