[DOC] "is now bundled" is ambiguous

I think it meant it's now a bundled "gem", but "is now bundled" implies
it's a new gem that was neither default nor bundled gems. So I changed
wording.

I also want to change the subjects and reorder them so that it will read:
"The following default gem" (new) -> "The following default gem" (updated) ->
"The following bundled gem" (new) -> "The following bundled gem" (updated).

NEWS.md

@@ -128,6 +128,10 @@ The following default gems are updated.
 * timeout 0.4.0
 * uri 0.12.2
 
+The following bundled gem is promoted from default gems.
+
+* racc 1.7.1
+
 The following bundled gems are updated.
 
 * minitest 5.20.0
@@ -140,10 +144,6 @@ The following bundled gems are updated.
 * typeprof 0.21.8
 * debug 1.8.0
 
-The following default gem is now bundled.
-
-* racc 1.7.1
-
 See GitHub releases like [Logger](https://github.com/ruby/logger/releases) or
 changelog for details of the default gems or bundled gems.
 
@@ -153,7 +153,7 @@ changelog for details of the default gems or bundled gems.
 
 ## Stdlib compatibility issues
 
-* `racc` is promoted bundled gems.
+* `racc` is promoted to bundled gems.
   * You need to add `racc` to your `Gemfile` if you use `racc` under bundler environment.
 * `ext/readline` is retired
   * We have `reline` that is pure Ruby implementation compatible with `ext/readline` API. We rely on `reline` in the future. If you need to use `ext/readline`, you can install `ext/readline` via rubygems.org with `gem install readline-ext`.

tool/update-NEWS-gemlist.rb

@@ -32,9 +32,9 @@ ARGV.each do |type|
   update[changed, type] or next
   if added and !added.empty?
     if type == 'bundled'
-      update[added, 'default', 'now bundled'] or next
+      update[added, type, 'promoted from default gems'] or next
     else
-      update[added, 'default', 'added'] or next
+      update[added, type, 'added'] or next
     end
   end
   File.write("NEWS.md", news)