Update configuration.mdx based on issue #266

Author: kgowru

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

@@ -72,23 +72,20 @@ 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 `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
+  default-group: local
+  groups:
+    local:
+      generators:
+        - name: fernapi/fern-python
+          version: 0.7.1
+          config:
+            package_name: "my_custom_package"
+  ```
 </ParamField>
 
 <ParamField path="pydantic_config" type="SdkPydanticModelCustomConfig" default="SdkPydanticModelCustomConfig()" required={false} toc={true}>
@@ -142,6 +139,24 @@ groups:
 <ParamField path="pyproject_toml" type="string" default="null" required={false} toc={true}>
 </ParamField>
 
+<ParamField path="sdk_variables" type="object" default="{}" required={false} toc={true}>
+  Configure SDK variables that are injected into endpoint paths. These variables are provided when constructing the client and reused across requests. For example:
+
+  ```yaml
+  # OpenAPI/Swagger spec
+  x-fern-sdk-variables:
+    project_id:
+      type: string
+      description: The project ID to use for requests
+
+  # SDK Usage
+  client = Client(project_id="my-project")
+  client.some_endpoint() # Will use project_id in path
+  ```
+
+  This was added in version 4.24.0 of the Python generator.
+</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>