Docs: add a note about archiving

Give future visitors a hint about where to find the AS

Signed-off-by: Tobin Feldman-Fitzthum <[email protected]>

README.md

@@ -1,5 +1,7 @@
 # Attestation Service
 
+**This project has been consolidated with the Key Broker Service and now lives [here](https://github.com/confidential-containers/kbs/tree/main/attestation-service).**
+
 Attestation Service (AS for short) is a general function set that can verify TEE evidence.
 With Confidential Containers, the attestation service must run in an secure environment, outside of the guest node.
 
@@ -147,4 +149,4 @@ If the user does not need to customize his own policy, AS will use the [default
 
 [Reference Value Provider Service](docs/rvps.md) (RVPS for short) is a module integrated in the AS to verify,
 store and provide reference values. RVPS receives and verifies the provenance input from the software supply chain,
-stores the measurement values, and generates reference value claims for the AS according to the evidence content when the AS verifies the evidence.
+stores the measurement values, and generates reference value claims for the AS according to the evidence content when the AS verifies the evidence.