Merge pull request #8490 from reitermarkus/document-livecheck-formula

Document `LivecheckFormula`.

Library/Homebrew/.rubocop_todo.yml

@@ -21,5 +21,4 @@ Style/Documentation:
     - 'utils/gems.rb'
     - 'utils/popen.rb'
     - 'utils/shell.rb'
-    - 'utils/livecheck_formula.rb'
     - 'version.rb'

Library/Homebrew/utils/livecheck_formula.rb

 # frozen_string_literal: true
 
+# Helper module for parsing output of `brew livecheck`.
+#
+# @api private
 module LivecheckFormula
   module_function