chore: add description for notation.enabled in the helm charts readme…

charts/ratify/README.md

@@ -49,6 +49,7 @@ Values marked `# DEPRECATED` in the `values.yaml` as well as **DEPRECATED** in t
 | tolerations                                        | Pod tolerations for the Ratify deployment                                                                                                                                                                                                                                                                                                                              | `[]`                              |
 | notationCerts                                      | An array of public certificate/certificate chain used to create inline certstore used by Notation verifier                                                                                                                                                                                                                                                             | ``                                |
 | cosignKeys                                         | An array of public keys used to create inline key management providers used by Cosign verifier                                                                                                                                                                                                                                                                         | `[]`                              |
+| notation.enabled                                   | Enables/disables the built-in notation verifier. MUST be set to true for notation verification.                                                                                                                                                                                                                                                                        | `true`                            |
 | cosign.enabled                                     | Enables/disables cosign tag-based signature lookup in ORAS store. MUST be set to true for cosign verification.                                                                                                                                                                                                                                                         | `true`                            |
 | cosign.scopes                                      | An array of scopes relevant to the single trust policy configured in Cosign verifier. A scope of '*' is a global wildcard character to represent all images apply.                                                                                                                                                                                                     | `["*"]`                           |
 | cosign.rekorURL                                    | URL string reference to remote rekor server. If not specified, implementation will default to use Rekor public good instance `https://rekor.sigstore.dev`.                                                                                                                                                                                                             | ``                                |