* Replace quotes with tip boxes
The use of quotes was making important content less clear than the body. Docusaurus now has native tip boxes use remark-admonitions so use these instead.
* Replace json5 codeblock language with json
json5 doesn't have native syntax colouring. Rather than handle with custom css just flip block to have `json` set as language to create same result. All blocks were standard JSON anyway
* Use f-strings instead of .format()
* Code block language marker fixes
* Make example code blocks syntactically valid Python
* Run all python code blocks through black
https://github.com/scop/misc/blob/master/black_markdown.py
* Add some missing code block language markers
* Use shell language consistently to mark shell code blocks
* Undo folding of some example dicts
* Remove outdated OrderedDict comments per Python 3.7, replace with plain dict
