actions/sync/shared-config: fix vendor exclude.

This should be in the general rubocop, not the docs one.

.github/actions/sync/shared-config.rb

@@ -44,14 +44,14 @@ def git(*args)
   homebrew_repository_path/"Library/#{rubocop_yaml}",
   permitted_classes: [Symbol, Regexp],
 )
+homebrew_rubocop_config_yaml["AllCops"]["Exclude"] << '"vendor/**/*"'
 homebrew_rubocop_config = homebrew_rubocop_config_yaml.reject do |key, _|
   key.match?(%r{\Arequire|inherit_from|inherit_mode|Cask/|Formula|Homebrew|Performance/|RSpec|Sorbet/})
 end.to_yaml
 homebrew_docs_rubocop_config_yaml = YAML.load_file(
   homebrew_repository_path/"docs/#{rubocop_yaml}",
   permitted_classes: [Symbol, Regexp],
 )
-homebrew_docs_rubocop_config_yaml["AllCops"]["Exclude"] << '"vendor/**/*"'
 homebrew_docs_rubocop_config = homebrew_docs_rubocop_config_yaml.reject do |key, _|
   key.match?(%r{\AFormulaAudit/|Sorbet/})
 end.to_yaml