How to look up help/variables/config/etc in Doom Emacs

SPC-h has lots of helpful commands for finding out what's currently configured. This also contains the describe commands, such as describe-variable, describe-key, etc.

https://github.com/hlissner/doom-emacs/blob/develop/docs/getting_started.org#looking-up-documentation-and-state-from-within-emacs

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