heading fix, C2SP

Author: veorq

README.md

@@ -1,4 +1,4 @@
-# <a href="#"><img src="media/BLAKE3.svg" alt="BLAKE3" height=50></a>
+# BLAKE3
 
 BLAKE3 is a cryptographic hash function that is:
 
@@ -75,6 +75,9 @@ BLAKE3 was designed by:
 
 The development of BLAKE3 was sponsored by [Electric Coin Company](https://electriccoin.co).
 
+BLAKE3 is also [specified](https://c2sp.org/BLAKE3) in the [Community
+Cryptography Specification Project (C2SP)](https://c2sp.org).
+
 *NOTE: BLAKE3 is not a password hashing algorithm, because it's
 designed to be fast, whereas password hashing should not be fast. If you
 hash passwords to store the hashes or if you derive keys from passwords,