read(jsonstring) in docs raises error

[jtrakk]

https://juliadata.github.io/StructTypes.jl/stable/#StructTypes.AbstractType uses read on a json string

car = StructTypes.read("""
{
    "type": "car",
    "make": "Mercedes-Benz",
    "model": "S500",
    "seatingCapacity": 5,
    "topSpeed": 250.1
}""", Vehicle)

but I think read only works on filenames.

julia> # example from StructTypes deserialization
       car = StructTypes.read("""
       {
           "type": "car",
           "make": "Mercedes-Benz",
           "model": "S500",
           "seatingCapacity": 5,
           "topSpeed": 250.1
       }""", Vehicle)
ERROR: SystemError: opening file "{\n    \"type\": \"car\",\n    \"make\": \"Mercedes-Benz\",\n    \"model\": \"S500\",\n    \"seatingCapacity\": 5,\n    \"topSpeed\": 250.1\n}": No such file or directory

[quinnj]

Whoops! Sorry about the typo there; it should be JSON3.read instead of StructTypes.read; PR to fix is up: #60