docs(examples): add ray-serve and dynamo-operator to sample index

[mmjinglin163]

TL;DR

Add two existing helm chart function samples to the top-level examples/README.md index: Ray Serve and Dynamo Operator. Both directories already live under examples/function-samples/helmchart-samples/ with README and chart assets, but were not listed in the Function Samples table, so contributors could miss them when browsing the repo.

Additional Details

The examples/README.md file is the entry point for self-hosted sample discovery. Several helm chart samples are indexed there (for example inference-test-sample and multi-node-helm-function-test), but ray-serve-sample and dynamo-operator-sample were omitted despite being present in the tree.

This change adds one table row per sample with a relative link and a short description consistent with existing index entries:

• ray-serve-sample: Ray Serve deployed as an NVCF Helm function
• dynamo-operator-sample: vLLM disaggregated router deployed through NVCF

No sample code, charts, or runtime behavior is modified. No Fern navigation or docs/user/ pages are affected.

Limitations: This PR does not expand the thin vllm-otlp-exporter-sample README or add new samples. Those are separate follow-up contributions.

For the Reviewer

Please review only examples/README.md. The diff is two inserted table rows placed after the Multi-Node Helm Function entry and before Load Tester Supreme.

Verify that:

• Link paths match existing directories
• Descriptions match the intent of each sample's local README

No maintainer action is required beyond a quick path and wording check.

For QA

Verification steps run locally:

git diff --check
git diff examples/README.md
test -f examples/function-samples/helmchart-samples/ray-serve-sample/README.md
test -f examples/function-samples/helmchart-samples/dynamo-operator-sample/README.md

Results:

• git diff --check: passed (no trailing whitespace)
• Linked README paths: both exist
• Diff scope: 1 file, 2 lines added

Is QA Needed? No runtime QA. Docs-only index update; no cluster deploy or Bazel build required.

Issues

• NO-REF

Checklist

• I am familiar with the Contributing Guidelines.
• I have signed off my commits for Developer Certificate of Origin (DCO) compliance.
• New or existing tests cover these changes. (N/A: documentation index only; no executable code changed.)
• The documentation is up to date with these changes.

[sbaum1994]

Hi @mmjinglin163 thank you for the contribution, the change looks good and is approved - We currently accept contributions through coauthoring, we will accept this contribution tomorrow