[ruby-cvs:78824] e568bb5649 (master): Update private visibility explanation

"zverok" <[email protected]> Sun, 22 Dec 2019 23:17:52 +0900 (JST)

Newsgroups	gmane.comp.lang.ruby.cvs
Message-ID	<[email protected]>

zverok	2019-12-22 05:17:35 +0900 (Sun, 22 Dec 2019)

  New Revision: e568bb5649

  https://github.com/ruby/ruby/commit/e568bb5649

  Log:
    Update private visibility explanation

  Modified files:
    doc/syntax/modules_and_classes.rdoc