add description for SDK page

Author: ethanpalm

api-playground/customization/adding-sdk-examples.mdx

@@ -1,6 +1,6 @@
 ---
 title: "Adding SDK examples"
-description: ""
+description: "Display language-specific code samples alongside your API endpoints to show developers how to use your SDKs"
 ---
 
 If your users interact with your API using an SDK rather than directly through a network request, you can use the `x-codeSamples` extension to add code samples to your OpenAPI document and Mintlify will display them in your OpenAPI pages.