Revert "Remove credit from release notes"

See b2eaf4c

releaser/releasenotes_writer.go

@@ -59,6 +59,7 @@ This release represents **{{ len .All }} contributions by {{ len $contribsPerAut
 {{- $u3 := index $contribsPerAuthor 2 -}}
 {{- $u4 := index $contribsPerAuthor 3 -}}
 {{- $u1.AuthorLink }} leads the Hugo development with a significant amount of contributions, but also a big shoutout to {{ $u2.AuthorLink }}, {{ $u3.AuthorLink }}, and {{ $u4.AuthorLink }} for their ongoing contributions.
+And thanks to [@digitalcraftsman](https://github.com/digitalcraftsman) for his ongoing work on keeping the themes site in pristine condition.
 {{ end }}
 Many have also been busy writing and fixing the documentation in [hugoDocs](https://github.com/gohugoio/hugoDocs),
 which has received **{{ len .Docs }} contributions by {{ len $docsContribsPerAuthor }} contributors**.