Fix RUBY_PAGER in manpage

Author: etiennebarrie

man/ruby.1

@@ -537,16 +537,16 @@ Introduced in Ruby 3.3, default: unset.
 .Pp
 .It Ev RUBY_PAGER
 The pager command that will be used for
-.Pp
-.It Ev RUBY_THREAD_TIMESLICE
-Sets the default thread time slice (thread quantum) in milliseconds.
-Introduced in Ruby 3.4, default: 100ms.
 .Fl -help
 option.
 Introduced in Ruby 3.0, default:
 .Ev PAGER
 environment variable.
 .Pp
+.It Ev RUBY_THREAD_TIMESLICE
+Sets the default thread time slice (thread quantum) in milliseconds.
+Introduced in Ruby 3.4, default: 100ms.
+.Pp
 .It Ev PATH
 Ruby refers to the
 .Ev PATH