Removed prerelease settings from Goreleaser (#101)

Author: Etourneau Gwenn

.goreleaser.yml

@@ -56,7 +56,6 @@ signs:
       - "--detach-sign"
       - "${artifact}"
 release:
-  prerelease: auto
   extra_files:
     - glob: 'terraform-registry-manifest.json'
       name_template: '{{ .ProjectName }}_{{ .Version }}_manifest.json'