Reference SDK Release steps in common (#47066)

Author: smw-ms

.github/copilot-instructions.md

@@ -151,19 +151,4 @@ When facing issues, direct users to:
 
 ## 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](../eng/common/instructions/copilot/sdk-release.instructions.md).