add implementations header

README.md

@@ -23,9 +23,11 @@ The best place to follow along is the KZG Ceremony channel in the Ethereum R&D D
 ## KZG Ceremony
 - [KZG Ceremony Timeline](https://notes.ethereum.org/@CarlBeek/kzg_ceremony_timelines) (subject to change)
 - [Spec Repo](https://github.com/ethereum/kzg-ceremony-specs) 
-- [Primary implementation](https://github.com/crate-crypto/small-powers-of-tau) (Rust)
 - [SECBIT Spec + Implementation Audit](https://github.com/ethereum/kzg-ceremony/blob/main/KZG10-Ceremony-audit-report.pdf)
 
+## Client Implementations
+- [Small powers of Tau](https://github.com/crate-crypto/small-powers-of-tau) (Rust)
+
 ## Other Documentation
 - [Trusted Setup Rationale](https://hackmd.io/@6iQDuIePQjyYBqDChYw_jg/SJ-08AoT5)
 - [Towers of Pau](https://dknopik.de/)