* Fix backtick enclosure in section 2
* Remove unnecessary double new line in route_tools() docstring
* Fix typos for describing checkpointer memory in section 3
* Fix grammar mistake when describing checkpointing in section 3
* Replace is with are to describe plural
* Fix incomplete double underscore wrapping for markdown formatting in section 7
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Co-authored-by: William FH <13333726+hinthornw@users.noreply.github.com>
