Rename to Configuration Registry. Always spell out words.

Add meta information.

Author: stevepiercy

docs/backend/config-registry.md

@@ -0,0 +1,27 @@
+---
+myst:
+  html_meta:
+    "description": "Configuration Registry"
+    "property=og:description": "Configuration Registry"
+    "property=og:title": "Configuration Registry"
+    "keywords": "Plone 6, Configuration Registry, backend, plone.registry, plone.app.registry, GenericSetup"
+---
+
+(backend-configuration-registry-label)=
+
+# Configuration Registry
+
+```{todo}
+Explain how `plone.registry` / `plone.app.registry` and `GenericSetup` work together.
+Provide examples of how to import and export Plone settings.
+
+See 
+```
+
+(backend-configuration-registry-generic-setup-label)=
+
+## `GenericSetup`
+
+```{todo}
+Explain how `GenericSetup` works.
+```

docs/backend/configuration-registry.md

@@ -17,7 +17,7 @@ Insert introduction here.
 
 ```{toctree}
 :maxdepth: 2
-config-registry
+configuration-registry
 control-panels
 content-types
 behaviors