docs(helm): point KEDA ScaledObject at the quickstart Deployment (NVBug 6622429)

[kheiss-uwzoo]

Summary

• Fixes NVBug 6622429: the Helm README KEDA example hard-coded scaleTargetRef.name: nemo-retriever-realtime, which does not exist for the documented quickstart release retriever.
• The example now uses retriever-nemo-retriever-realtime and documents a label-based kubectl command so other release names can discover the rendered realtime Deployment.

Test plan

• Chart naming helper matches the README: release retriever renders retriever-nemo-retriever-realtime; nemo-retriever and custom-release produce different names.
• helm template retriever ./nemo_retriever/helm with the documented KEDA/split flags (Helm is not installed in the authoring environment).
• On a cluster, kubectl get deploy -l app.kubernetes.io/instance=retriever,app.kubernetes.io/component=realtime returns the same Deployment name.

pre-draft: leakage, mkdocs --strict, ::a, ::p, ::r on the diff vs main

Base: upstream/main
Files: nemo_retriever/helm/README.md

Check	Result
Leakage (page roles + see [ CTAs)	PASS — helm README has no see [ CTAs. The leakage script vs origin/main also scanned stale/untracked leftovers (custom-metadata.md); those files are not in this PR.
Allowed paths	PASS — 1 documentation file (nemo_retriever/helm/README.md)
mkdocs --strict	PASS for this change — helm README is not in the MkDocs site. Strict failed on untracked leftover pages (custom-metadata.md, user-defined-stages.md) that are not in this diff.
::a audit	PASS — scaleTargetRef.name matches nemo-retriever.role.fullname for release retriever; labels match nemo-retriever.role.selectorLabels (high confidence). validate_code_blocks.py reported 0 fences on this file; YAML/bash in the changed section were reviewed manually.
::p polish	Applied — replaced the hard-coded target, added discovery command, and named the Helm labels explicitly.
::r style	95% on the changed prose — no blocking issues. Surrounding KEDA section still has pre-existing contractions and em dashes that were left untouched.

Code drift (not in this docs PR): none. Chart templates already derive Deployment names correctly; only the README example was wrong.

PR: this draft

[greptile-apps]

Greptile Summary

Updates the Helm KEDA example so the ScaledObject targets the Deployment rendered by the documented retriever release.

• Changes the example target to retriever-nemo-retriever-realtime.
• Adds a label-based command for discovering realtime and batch Deployment names under other Helm release names.

Confidence Score: 5/5

The documentation-only change appears safe to merge.

The documented quickstart Deployment name, release-instance label, component label, and single realtime Deployment assumption agree with the checked-in Helm templates.

Important Files Changed

Filename	Overview
nemo_retriever/helm/README.md	The revised KEDA target name and label selectors match the chart’s fullname and role-label helpers.

_{Reviews (1): Last reviewed commit: "docs(helm): point KEDA ScaledObject at t..." | Re-trigger Greptile}