chore: fix link to ascon-hash crate (#471)

TomAFrench · web-flow · commit 29d671e6430e · 2023-04-30T12:26:31.000-06:00
diff --git a/README.md b/README.md
@@ -237,6 +237,7 @@ Unless you explicitly state otherwise, any contribution intentionally submitted
 
 [//]: # (crates)
 
+[`ascon-hash`]: ./ascon-hash
 [`belt-hash`]: ./belt-hash
 [`blake2`]: ./blake2
 [`fsb`]: ./fsb
