SOPs README

[cmrn-rhi]

Recommend updating the README so that is has version number placeholders.
e.g. Wastewater_Metadata-Curation-SOP-#-#.pdf instead of Wastewater_Metadata-Curation-SOP-3-1.pdf
This way you don't have to remember to update the readme every time. If you want to keep the other approach then please update the file names in the readme to match the files.

[cmrn-rhi]

Also both SOP files say version 3.1 in the file headers but are labelled 4.2 in the file names.