Use more descriptive heredoc names.

Library/Homebrew/cask/lib/hbc/artifact/abstract_uninstall.rb

Library/Homebrew/cask/lib/hbc/cli/create.rb

Library/Homebrew/dev-cmd/mirror.rb

Library/Homebrew/dev-cmd/tap-new.rb

Library/Homebrew/extend/pathname.rb

Library/Homebrew/formula.rb

Library/Homebrew/formula_creator.rb

Library/Homebrew/language/python.rb

Library/Homebrew/sandbox.rb

Library/Homebrew/test/cask/artifact/pkg_spec.rb

...omebrew/test/cask/cask_loader/from_content_loader_spec.rb

...ry/Homebrew/test/cask/cask_loader/from_uri_loader_spec.rb

Library/Homebrew/test/cask/cli/cat_spec.rb

Library/Homebrew/test/cask/cli/create_spec.rb

Library/Homebrew/test/cask/cli/uninstall_spec.rb

Library/Homebrew/test/cask/pkg_spec.rb

Library/Homebrew/test/cask/system_command_result_spec.rb

Library/Homebrew/test/cmd/custom-external-command_spec.rb

Library/Homebrew/test/cmd/install_spec.rb

Library/Homebrew/test/cmd/irb_spec.rb