Consistently use Title Case for titles of Dialog pages
Look at section 15.7 Miscellaneous Dialogs and section 15.2 Image Structure Related Dialogs on https://testing.docs.gimp.org/2.99/en/ and see two outliners using "dialog" instead of "Dialog".
Look at section 15.7 Miscellaneous Dialogs and section 15.2 Image Structure Related Dialogs on https://testing.docs.gimp.org/2.99/en/ and see two outliners using "dialog" instead of "Dialog".