Improve wording of success and fail messages

[pofl]

Type of Change

• Bugfix
• Enhancement / new feature ?
• Refactoring
• Documentation ?

Description

Improve wording of default success and fail messages because what they say is just incorrect.

Checklist

• Write tests
• Make sure all tests pass
• Update documentation
• Review the Contributing Guideline and sign CLA
• Reference relevant issue(s) and close them after merging

[github-actions]

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