Updated TOC

Author: carlbraganza

keps/sig-storage/3314-csi-changed-block-tracking/README.md

@@ -92,7 +92,9 @@ tags, and then generate with `hack/update-toc.sh`.
   - [The SnapshotMetadata Service API](#the-snapshotmetadata-service-api)
     - [Metadata Format](#metadata-format)
     - [GetAllocated RPC](#getallocated-rpc)
+      - [GetAllocated Errors](#getallocated-errors)
     - [GetDelta RPC](#getdelta-rpc)
+      - [GetDelta Errors](#getdelta-errors)
   - [Kubernetes Components](#kubernetes-components)
   - [Custom Resources](#custom-resources)
     - [SnapshotSessionRequest](#snapshotsessionrequest)