Docs: keep the HTTP API list updated (#92635)

* Docs: keep the HTTP API list updated

* Update menu title to be consistent with the HTTP API list

* Update docs/sources/developers/http_api/preferences.md

Co-authored-by: Jack Baldry <jack.baldry@grafana.com>

* Update docs/sources/developers/http_api/snapshot.md

Co-authored-by: Jack Baldry <jack.baldry@grafana.com>

---------

Co-authored-by: Irene Rodriguez <irene.rodriguez@grafana.com>
Co-authored-by: Jack Baldry <jack.baldry@grafana.com>

docs/sources/developers/http_api/preferences.md

@@ -13,7 +13,7 @@ labels:
   products:
     - enterprise
     - oss
-title: 'HTTP Preferences API '
+title: 'Preferences API'
 ---
 
 # User and Org Preferences API