docs(harmonyos): modify layout options for ext-harmonyos

Modify layout options for ext-harmonyos in `genius/harmonyos/arkui-clarify.vm` file.
Removed duplicate components, updated comment examples for Android Layout code, and made the layout and components suggestions unique.

Author: phodal

exts/ext-harmonyos/src/main/resources/genius/harmonyos/arkui-clarify.vm

@@ -10,8 +10,8 @@ According to the user's code/requirements, you should choose the best Layout and
 
 For example:
 
-User: // maybe send Android Layout code, maybe some requirements
-Your Answer: [FlexLayout, Button, CheckBox, Checkbox, Button, Text]
+User: // maybe Android Layout code, maybe some requirements or some other code.
+Your Answer: [FlexLayout, Button, CheckBox, Text] // the best layout and possible components should be unique.
 
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