Update configuration.mdx based on issue #266

Author: kgowru

fern/products/sdks/overview/python/configuration.mdx

@@ -21,13 +21,55 @@ groups:
 ## SDK Configuration Options
 
 <ParamField path="additional_init_exports" type="array" default="null" required={false} toc={true}>
+  Additional exports to include in the package's __init__.py file.
+</ParamField>
+
+<ParamField path="client" type="object" default="{}" required={false} toc={true}>
+  Configuration for the generated client class and file structure.
+
+  ```yaml
+  config:
+    client:
+      filename: "my_client.py"
+      class_name: "MyClient"
+      exported_filename: "my_client.py"
+      exported_class_name: "MyClient"
+  ```
+</ParamField>
+
+<ParamField path="client.filename" type="string" default="client.py" required={false} toc={true}>
+  The filename for the generated client file.
+</ParamField>
+
+<ParamField path="client.class_name" type="string" default="null" required={false} toc={true}>
+  The name of the generated client class.
+</ParamField>
+
+<ParamField path="client.exported_filename" type="string" default="client.py" required={false} toc={true}>
+  The filename of the exported client which will be used in code snippets.
+</ParamField>
+
+<ParamField path="client.exported_class_name" type="string" default="null" required={false} toc={true}>
+  The name of the exported client class that will be used in code snippets.
 </ParamField>
 
 <ParamField path="default_bytes_stream_chunk_size" type="number" default="null" required={false} toc={true}>
   The chunk size to use (if any) when processing a response bytes stream within `iter_bytes` or `aiter_bytes` results in: `for chunk in response.iter_bytes(chunk_size=<default_bytes_stream_chunk_size>):`
 </ParamField>
 
 <ParamField path="exclude_types_from_init_exports" type="bool" default="false" required={false} toc={true}>
+  Whether to exclude type definitions from the package's __init__.py exports.
+</ParamField>
+
+<ParamField path="extension_headers" type="object" default="{}" required={false} toc={true}>
+  Headers to inject into all requests made by the client. Useful for custom authentication or tracking.
+  
+  ```yaml
+  config:
+    extension_headers:
+      x-custom-header: "custom-value"
+      x-api-key: "default-key"
+  ```
 </ParamField>
 
 <ParamField path="extra_dependencies" type="object" default="{}" required={false} toc={true}>
@@ -40,27 +82,31 @@ groups:
 </ParamField>
 
 <ParamField path="extra_dev_dependencies" type="object" default="{}" required={false} toc={true}>
+  Additional development dependencies to include in the generated package.
 </ParamField>
 
 <ParamField path="extras" type="object" default="{}" required={false} toc={true}>
+  Optional feature groups that can be installed with the package.
 </ParamField>
 
 <ParamField path="flat_layout" type="bool" default="false" required={false} toc={true}>
+  Whether to generate a flat file structure instead of nested directories.
 </ParamField>
 
 <ParamField path="follow_redirects_by_default" type="bool" default="true" required={false} toc={true}>
   Whether to follow redirects by default in HTTP requests.
 </ParamField>
 
 <ParamField path="improved_imports" type="bool" default="true" required={false} toc={true}>
-  Feature flag that improves imports in the Python SDK by removing nested `resources` directory
+  Feature flag that improves imports in the Python SDK by removing nested `resources` directory.
 </ParamField>
 
 <ParamField path="include_legacy_wire_tests" type="bool" default="false" required={false} toc={true}>
-  Whether or not to include legacy wire tests in the generated SDK
+  Whether or not to include legacy wire tests in the generated SDK.
 </ParamField>
 
 <ParamField path="include_union_utils" type="bool" default="false" required={false} toc={true}>
+  Whether to include utility functions for working with union types.
 </ParamField>
 
 <ParamField path="inline_path_params" type="bool" default="false" required={false} toc={true}>
@@ -72,26 +118,18 @@ groups:
 </ParamField>
 
 <ParamField path="package_name" type="string" default="null" required={false} toc={true}>
-
-Specifies the Python package name that users will import your generated client
-from.
+  Specifies the Python package name that users will import your generated client from.
 
-For example, setting `package_name: "my_custom_package"` enables users to use
-`my_custom_package import Client` to import your client:
+  For example, setting `package_name: "my_custom_package"` enables users to use `from my_custom_package import Client` to import your client:
 
-```yaml {7-10}
-default-group: local
-groups:
-  local:
-    generators:
-      - name: fernapi/fern-python
-        version: 0.7.1
-        config:
-          package_name: "my_custom_package"
-```
+  ```yaml
+  config:
+    package_name: "my_custom_package"
+  ```
 </ParamField>
 
-<ParamField path="pydantic_config" type="SdkPydanticModelCustomConfig" default="SdkPydanticModelCustomConfig()" required={false} toc={true}>
+<ParamField path="pydantic_config" type="object" default="{}" required={false} toc={true}>
+  Configuration options for Pydantic model generation.
 </ParamField>
 
 <ParamField path="pydantic_config.include_union_utils" type="bool" default="false" required={false} toc={true}>
@@ -140,20 +178,23 @@ groups:
 </ParamField>
 
 <ParamField path="pyproject_toml" type="string" default="null" required={false} toc={true}>
+  Custom pyproject.toml content to include in the generated package.
 </ParamField>
 
 <ParamField path="should_generate_websocket_clients" type="bool" default="false" required={false} toc={true}>
   Feature flag that enables generation of Python websocket clients.
 </ParamField>
 
 <ParamField path="skip_formatting" type="bool" default="false" required={false} toc={true}>
+  Whether to skip code formatting of the generated files.
 </ParamField>
 
 <ParamField path="timeout_in_seconds" type="number | 'infinity'" default="60" required={false} toc={true}>
   By default, the generator generates a client that times out after 60 seconds. You can customize this value by providing a different number or setting to `infinity` to get rid of timeouts.
 </ParamField>
 
 <ParamField path="use_api_name_in_package" type="bool" default="false" required={false} toc={true}>
+  Whether to include the API name in the generated package name.
 </ParamField>
 
 <ParamField path="use_inheritance_for_extended_models" type="bool" default="true" required={false} toc={true}>
@@ -166,32 +207,4 @@ groups:
 
 <ParamField path="use_typeddict_requests_for_file_upload" type="bool" default="false" required={false} toc={true}>
   Whether or not to generate TypedDicts instead of Pydantic Models for file upload request objects. Note that this flag was only introduced due to an oversight in the `use_typeddict_requests` flag implementation; it should be removed in the future.
-</ParamField>
-
-### client
-  Configuration for the generated client class and file structure.
-
-  ```yaml
-  config:
-    client:
-      filename: "my_client.py"
-      class_name: "MyClient"
-      exported_filename: "my_client.py"
-      exported_class_name: "MyClient"
-  ```
-
-<ParamField path="filename" type="string" default="client.py" required={false} toc={true}>
-  The filename for the generated client file.
-</ParamField>
-
-<ParamField path="class_name" type="string" default="null" required={false} toc={true}>
-  The name of the generated client class.
-</ParamField>
-
-<ParamField path="exported_filename" type="string" default="client.py" required={false} toc={true}>
-  The filename of the exported client which will be used in code snippets.
-</ParamField>
-
-<ParamField path="exported_class_name" type="string" default="null" required={false} toc={true}>
-  The name of the exported client class that will be used in code snippets.
 </ParamField>