Update the paragraphs in "Rich Libraries" which included a dead link

* man/ruby.1: Update the paragraphs in "Rich Libraries" which
  included a dead link.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56212 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 20 insertions, 5 deletions

diff --git a/ChangeLog b/ChangeLog
index 663a3511e9..87edb68dff 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Sep 23 20:19:09 2016  Akinori MUSHA  <knu@iDaemons.org>
+
+	* man/ruby.1: Update the paragraphs in "Rich Libraries" which
+	  included a dead link.
+
 Fri Sep 23 20:05:27 2016  Akinori MUSHA  <knu@iDaemons.org>
 
 	* man/ruby.1, man/erb.1, man/irb.1, man/ri.1: Use the `Lk` macro
diff --git a/man/ruby.1 b/man/ruby.1
index 9fb38f9151..f9b21f91cf 100644
--- a/man/ruby.1
+++ b/man/ruby.1
@@ -120,11 +120,21 @@ On most
 systems, you can load object files into the Ruby interpreter
 on-the-fly.
 .It Sy "Rich libraries"
-Libraries called "builtin libraries" and "standard libraries" are bundled with Ruby.
-And you can obtain more libraries via the package management system called `RubyGems'.
-.Pp
-Moreover there are thousands of Ruby projects on GitHub
-.Aq Lk https://github.com/languages/Ruby .
+In addition to the
+.Dq builtin libraries
+and
+.Dq standard libraries
+that are bundled with Ruby, a vast amount of third-party libraries
+.Pq Dq gems
+are available via the package management system called
+.Sq RubyGems ,
+namely the
+.Xr gem 1
+command.  Visit RubyGems.org
+.Pq Lk https://rubygems.org/
+to find the gems you need, and explore GitHub
+.Pq Lk https://github.com/
+to see how they are being developed and used.
 .El
 .Pp
 .Sh OPTIONS