Fix table of contents - proofing
Fix table of contents - proofing

Robinlovelace/spatial-microsim-book,majazaloznik/spatial-microsim-book,majazaloznik/spatial-microsim-book,modumont/spatial-microsim-book,Robinlovelace/spatial-microsim-book,modumont/spatial-microsim-book,modumont/spatial-microsim-book,Robinlovelace/spatial-microsim-book