Examples emit deprecation warnings when compiled

[glennsl]

E.g.

  Warning number 3
  <censored> 76:41-52
  
  74 ┆ Array.map(
  75 ┆   geography =>
  76 ┆     List.exists(id => id == Geography.id(geography), included) ?
  77 ┆       <Geography
  78 ┆         key=(Geography.id(geography))
  
  deprecated: Geography.id
use idGet instead or use {abstract = light} explicitly

I suggest using {abstract = light} to avoid breakage and the quite frankly silly naming scheme used by default.