MS Word: Remove unintended input help message on tab key script (#9943) (#9945)
* MS Word: Remove unintended input help message on tab key script (#9943)
* Fix re https://github.com/nvaccess/nvda/pull/9945#issuecomment-512192251
Turn the faulty docstring into a block comment
rather than setting the `__doc__` attribute to `None`.
* Fix up: Use the `@script` decorator and preserve the docstring
* Fix up: Reduce diff, allowing for easier blaming and not linting historical comment