Update docs for v1

docs/3-generating.md

@@ -12,13 +12,20 @@ The easiest way to generate a schema for a type that implements is to use the [`
 let my_schema = schema_for!(MyStruct);
 ```
 
-This will create a schema that conforms to [JSON Schema Draft 7](https://json-schema.org/specification-links.html#draft-7), but this is liable to change in a future version of Schemars if support for other JSON Schema versions is added.
+This will create a schema that conforms to [JSON Schema 2020-12](https://json-schema.org/specification-links#2020-12), but this is liable to change in a future version of Schemars if support for other JSON Schema versions is added.
 
 If you want more control over how the schema is generated, you can use the [`gen` module](https://docs.rs/schemars/latest/schemars/gen/). There are two main types in this module:
 
 - [`SchemaSettings`](https://docs.rs/schemars/latest/schemars/gen/struct.SchemaSettings.html), which defines what JSON Schema features should be used when generating schemas (for example, how `Option`s should be represented).
 - [`SchemaGenerator`](https://docs.rs/schemars/latest/schemars/gen/struct.SchemaGenerator.html), which manages the generation of a schema document.
 
+For example, to generate a schema that conforms to [JSON Schema Draft 7](https://json-schema.org/specification-links.html#draft-7):
+
+```rust
+let generator = SchemaSettings::draft07().into_generator();
+let my_schema = generator.into_root_schema_for::<MyStruct>();
+```
+
 See the API documentation for more info on how to use those types for custom schema generation.
 
 ## Schema from Example Value