[*] fix deprecated archives.format_overrides.format (#677)

Author: pashagolub

.goreleaser.yml

@@ -22,7 +22,7 @@ archives:
   wrap_in_directory: true
   format_overrides:
     - goos: windows
-      format: zip
+      formats: [ 'zip' ]
   files:
     - LICENSE
     - README.md