Fix issue template link

broken with NixOS/nixpkgs#391926

Author: raboof

index.html

@@ -39,7 +39,7 @@ <h1>NixOS<br>Reproducible Builds</h1>
 However, this alone is not sufficient: builds may still leak
 timestamps or have other nondeterminisms. For nixpkgs, such problems are tracked
 with the <a href="https://github.com/NixOS/nixpkgs/issues?q=is%3Aopen+is%3Aissue+label%3A%226.topic%3A+reproducible+builds%22">'reproducible builds' issue tag</a>.
-You can report a new issue using the <a href="https://github.com/NixOS/nixpkgs/issues/new?template=10_unreproducible_package.yml">issue template</a>.
+You can report a new issue using the <a href="https://github.com/NixOS/nixpkgs/issues/new?template=09_unreproducible_package.yml">issue template</a>.
 </p>
 <h2>Checking reproducibility</h2>
 <p>