ci: update deprecated archive format syntax in goreleaser configuration (#196)

Author: kimdre

.goreleaser.yml

@@ -33,7 +33,7 @@ builds:
         goarch: '386'
     binary: '{{ .ProjectName }}_v{{ .Version }}'
 archives:
-  - format: zip
+  - formats: [ 'zip' ]
     name_template: '{{ .ProjectName }}_{{ .Version }}_{{ .Os }}_{{ .Arch }}'
 checksum:
   extra_files: