Fix incorrect gem name

Author: hsbt

en/news/_posts/2024-03-21-rce-rdoc-cve-2024-27281.md

@@ -24,8 +24,8 @@ When loading the documentation cache, object injection and resultant remote code
 We recommend to update the RDoc gem to version 6.6.3.1 or later. In order to ensure compatibility with bundled version in older Ruby series, you may update as follows instead:
 
 * For Ruby 3.0 users: Update to `rdoc` 6.3.4.1
-* For Ruby 3.1 users: Update to `time` 6.4.1.1
-* For Ruby 3.2 users: Update to `time` 6.5.1.1
+* For Ruby 3.1 users: Update to `rdoc` 6.4.1.1
+* For Ruby 3.2 users: Update to `rdoc` 6.5.1.1
 
 You can use `gem update rdoc` to update it. If you are using bundler, please add `gem "rdoc", ">= 6.6.3.1"` to your `Gemfile`.