Update the_vision.md

[damienegan]

Made the first paragraph more concise

Description

Replace this text with a short description. This can and should include links to issues the pull requests fixes for more details. This description will be part of the changelog for the project.

Definition of Done

More details on our definition of done can be found here.

• [ ] Adhers to our core principles and development principles.
• [ ] Follows our expected structure.
• [ ] Has automated specifications / tests.
• [ ] Has API documentation (XML, JsDoc or similar).
• [ ] Has general documentation sitting in the /Documentation folder at the root of the repository. (See more).
• [ ] Schemas for public formats.
• [ ] Ready to be packaged and released.

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