Decide for monospaced text syntax in RST files

[Stannislav]

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There are different ways to get monospaced font in docs:

• :code:`stuff`
• `stuff`
• ``stuff``

According to the some docs

• `stuff` = interpreted text
• ``stuff`` = inline literal

Usually when I want monospaced text in rst I go for ``stuff``. Is :code:`stuff` going to add some additional functionality/highlighting?

Is :code:`stuff` part of the rst syntax or is it specifi to Sphinx?

Originally posted by @Stannislav in https://github.com/BlueBrain/Atlas-Download-Tools/pull/56#discussion_r691301335