docs: correct 'dart version' (was 'julia version')

docs/docs/segment-dart.md

@@ -25,7 +25,7 @@ Display the currently active dart version.
 
 ## Properties
 
-- display_version: `boolean` - display the julia version - defaults to `true`
+- display_version: `boolean` - display the dart version - defaults to `true`
 - display_error: `boolean` - show the error context when failing to retrieve the version information - defaults to `true`
 - missing_command_text: `string` - text to display when the command is missing - defaults to empty
 - display_mode: `string` - determines when the segment is displayed