fixup!hsec-sync: add doc usage

Co-authored-by: Hécate <[email protected]>

code/hsec-sync/README.md

@@ -8,7 +8,7 @@ We aim to support both regular cabal-based and nix-based builds.
 
 ## Design
 
-[hsec-tools](../hsec-sync/) is the main entry point for dealing with [security advisories](https://github.com/haskell/security-advisories).
+[hsec-tools](../hsec-tools/) is the main entry point for dealing with [security advisories](https://github.com/haskell/security-advisories).
 
 Libraries implementors and services providers will mainly be interested by
 `Security.Advisories.Queries` and `hsec-tools query` which allows querying