Rename hosting WG to Supply Chain Integrity WG

Since the first draft, The Digital Identity Attestation and Developer Identity WG
was renamed to Supply Chain Integrity WG. This commit corrects the name.

Signed-off-by: Adolfo García Veytia (Puerco) <[email protected]>

Author: puerco

keps/sig-release/3027-slsa-compliance/README.md

@@ -148,8 +148,8 @@ This document proposes a plan to harden the Kubernetes releases by
 making the necessary adjustments to comply with the SLSA Framework.
 [SLSA (Supply-chain Levels for Software Artifacts)](https://slsa.dev/)
 is a framework to harden software supply currently being defined by the 
-[OpenSSF](https://openssf.org/)'s [Digital Identity Attestation Working
-Group](https://github.com/ossf/wg-digital-identity-attestation).
+[OpenSSF](https://openssf.org/)'s 
+[Supply Chain Integrity WG](https://github.com/ossf/wg-supply-chain-integrity).
 
 The framework provides requirements and recommendations to software
 build systems to harden their environments and the processes that drive