[DOC] Writing style guide for contributors

[NHomer-Edi]

Describe the proposed improvement to the documentation

So that the book remains consistent, it would be nice to have a "style guide" included in the contributor documentation so that contributors know how to write narrative pieces for the book.

For example, I notice some inconsistencies between the use of “Deep Learning” & “deep learning” and “Environmental data science” & “Environmental Data Science” and "AI" & "Artificial Intelligence"

Additional information

Other things this could include:
• Rules on capitalisation.
• A list of accepted abbreviations and acronyms which will be at the beginning/end of the book so that they do not need to be defined by every contributor.
• Number formatting like time and date and “%” vs. “per cent”.
• Punctuation guidelines.
• Formatting guidelines including bold/italic/underline and links

[acocac]

@NHomer-Edi thanks for the suggestion of a writing style guide! This is a great idea which we can implement as a new section within the Publishing guidelines.

I'll create a pull request linked to the issue so we can work together in the proposed section.

fyi, I'm also planning to have a discussion of a new version of the EnvDS book which will integrate the dashboard idea and a more friendly gallery for the executable notebooks. Let's discuss it in my return (:

[acocac]

Closing as we've considerably improved the guidelines for authors, including a more friendly gallery, see #126