add sub-section for cheat sheet

[patricialg]

We created a cheat/To-Do list which is a summary of steps suggested in this SOP. Please, check you agree with the sections selected.

[github-actions[bot]]

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[soerenthomsen]

This implements the discussion in #161

[soerenthomsen]

if there is any expert around on numbered lists in markdown please suggest how to deal with this if lists are broken i.e. by bullit point lists in between or full sentences etc

Will do this work around now: https://stackoverflow.com/questions/18088955/markdown-continue-numbered-list

[soerenthomsen]

This closes #161