Reference SDK release steps from common (Azure#53419)

* Reference SDK release steps from common

* Use absolute path

Co-authored-by: Jesse Squire <[email protected]>

---------

Co-authored-by: Jesse Squire <[email protected]>

Author: smw-ms

.github/copilot-instructions.md

@@ -23,20 +23,4 @@ This repo contains Azure SDKs for various Azure services and tools that generate
 
 ## SDK release
 
-There are two tools to help with SDK releases:
-- Check SDK release readiness
-- Release SDK
-
-### Check SDK Release Readiness
-Run `CheckPackageReleaseReadiness` to verify if the package is ready for release. This tool checks:
-- API review status
-- Change log status
-- Package name approval(If package is new and releasing a preview version)
-- Release date is set in release tracker
-
-### Release SDK
-Run `ReleasePackage` to release the package. This tool requires package name and language as inputs. It will:
-- Check if the package is ready for release
-- Identify the release pipeline
-- Trigger the release pipeline.
-User needs to approve the release stage in the pipeline after it is triggered.
+For detailed workflow instructions, see [SDK Release](https://github.com/Azure/azure-sdk-for-net/tree/main/eng/common/instructions/copilot/sdk-release.instructions.md).