Fix Changelog.md typo.

Author: simi

Changelog.md

@@ -19,7 +19,7 @@ Enhancements:
 * Change default driver for system specs on Rails 7.2 to match its default.
   (Steve Polito, #2746)
 * Verify ActiveJob arguments by comparing to the method signature. (Oli Peate, #2745)
-* Add suggestion to rails_helper.rb to skip when not in test most. (Glauco Custódio, #2751)
+* Add suggestion to rails_helper.rb to skip when not in test mode. (Glauco Custódio, #2751)
 * Add `at_priority` qualifier to `have_enqueued_job` set of matchers. (mbajur, #2759)
 * Add spec directories to `rails stats` on Rails main / 8.0.0. (Petrik de Heus, #2781)