update the link

Author: yizha1

articles/container-registry/container-registry-tutorial-sign-trusted-ca.md

@@ -395,7 +395,7 @@ To learn more about assigning policy to a principal, see [Assign Access Policy](
 
 ## Timestamping
 
-Since Notation v1.2.0 release, Notation supports [RFC 3161](https://www.rfc-editor.org/rfc/rfc3161) compliant timestamping. This enhancement extends the trust of signatures created within certificates validity, enabling successful signature verification even after certificates have expired. Timestamping reduces costs by eliminating the need to periodically re-sign images due to certificate expiry, which is especially critical when using short-lived certificates. For detailed instructions on how to sign and verify using timestamping, please refer to the [Notary Project timestamping guide](https://notaryproject.dev/docs/user-guides/how-to/timestamping/).
+Since Notation v1.2.0 release, Notation supports [RFC 3161](https://www.rfc-editor.org/rfc/rfc3161) compliant timestamping. This enhancement extends the trust of signatures created within certificates validity, enabling successful signature verification even after certificates have expired. Timestamping reduces costs by eliminating the need to periodically re-sign images due to certificate expiry, which is especially critical when using short-lived certificates. For detailed instructions on how to sign and verify using timestamping, please refer to the [Notary Project timestamping guide](https://v1-2.notaryproject.dev/docs/user-guides/how-to/timestamping/).
 
 ## Next steps