Add resource/filtering docs for OIDC managed groups (#1297)

website/data/docs-nav-data.json

@@ -139,6 +139,10 @@
             "title": "Host Sets",
             "path": "concepts/domain-model/host-sets"
           },
+          {
+            "title": "Managed Groups",
+            "path": "concepts/domain-model/managed-groups"
+          },
           {
             "title": "Scopes",
             "path": "concepts/domain-model/scopes"
@@ -168,6 +172,10 @@
             "title": "Overview",
             "path": "concepts/filtering"
           },
+          {
+            "title": "OIDC Managed Groups",
+            "path": "concepts/filtering/oidc-managed-groups"
+          },
           {
             "title": "Resource Listing",
             "path": "concepts/filtering/resource-listing"