Fix unquoted property names with dashes

[akudev]

The existing syntax is invalid. Dashes outside strings are considered "minus" characters.

Please look for other places.

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[OlMue]

Thanks, @akudev! @KvM2, let's check how we can look for other instances of this.

[akudev]

Actually it seems to be the only instance of this problem in this repo: https://github.com/search?q=repo%3ASAP-docs%2Fsapui5+%2F%5E%5Cs%2B%5Cw%2B-%5Ba-zA-Z0-9-%5D*%3A%5Cs*%22%2F&type=code

[KvM2]

Hi @akudev, Thanks for your contribution. I have adapted the documentation for 1.120.

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[akudev]

https://people.sap.com/andreas.kunz