US-755005 Review Helm charts docs for Autopilot

[konradkolo]

In addition to the stylistic and linguistic review, I added the following changes that seemed to be missing from the original docs but are supported in the configuration.

Location	What changed	Why
Config table	Added resources row	Original table didn't document this parameter
Config table	Added oauthPublicKeyURL row	Original table only mentioned this in the OAuth section further down
Config table	imagePullPolicy default stated as IfNotPresent	Original README said Always; corrected per values.yaml — please confirm this is the intended default
Inline credentials example	Added sessionToken: ""	Original example omitted this field
URL templates (DSS + prconfig)	Added :<service-port> to URL	Original used <servicename>.<namespace>.svc.cluster.local/ without port
Full deployment example	Added authEnabled: false and isInternalDeployment: false	Not in original example, makes defaults explicit
Model list intro	Added LOCAL_MODELS_FILE env var and /config/models.json mount path	New technical detail not in original
Model list section	Added fallback note: "If you set deployModelsConfigMap: false and do not provide customModels.existingConfigMap or customModels.inline, the service uses its built-in model list."	Documents previously undocumented behaviour