Move crosslink to Serverless project custom roles parent

Author: yetanothertw

deploy-manage/toc.yml

@@ -553,6 +553,9 @@ toc:
               - file: users-roles/cloud-enterprise-orchestrator/saml.md
           - file: users-roles/cloud-enterprise-orchestrator/configure-sso-for-deployments.md
       - file: users-roles/serverless-custom-roles.md
+        children:
+          - title: "Control access at the document and field level"
+            crosslink: docs-content://deploy-manage/users-roles/serverless-custom-roles/document-field-level-security.md
       - file: users-roles/cluster-or-deployment-auth.md
         children:
           - file: users-roles/cluster-or-deployment-auth/quickstart.md
@@ -622,8 +625,6 @@ toc:
               - file: users-roles/cluster-or-deployment-auth/authorization-plugins.md
               - file: users-roles/cluster-or-deployment-auth/controlling-access-at-document-field-level.md
               - file: users-roles/cluster-or-deployment-auth/submitting-requests-on-behalf-of-other-users.md
-      - title: "Control access at the document and field level"
-        crosslink: docs-content://deploy-manage/users-roles/cluster-or-deployment-auth/controlling-access-at-document-field-level.md
   - file: manage-spaces.md
     children:
       - file: manage-spaces-fleet.md