== should format an array of tables ==
[[products]]
name = "Hammer"
sku = 738594937

[[products]]  # empty table within the array

[[products]]
name = "Nail"
sku = 284758393

color = "gray"

[[fruits]]
name = "apple"

[fruits . physical]  # subtable
color = "red"
shape = "round"

[[fruits .  varieties  . "other"   ]]  # nested array of tables
name = "red delicious"

[expect]
[[products]]
name = "Hammer"
sku = 738594937

[[products]] # empty table within the array

[[products]]
name = "Nail"
sku = 284758393

color = "gray"

[[fruits]]
name = "apple"

[fruits.physical] # subtable
color = "red"
shape = "round"

[[fruits.varieties."other"]] # nested array of tables
name = "red delicious"