docs: update universal init title (#22990)

docs/docs/how_to/chat_models_universal_init.ipynb

@@ -5,7 +5,7 @@
    "id": "cfdf4f09-8125-4ed1-8063-6feed57da8a3",
    "metadata": {},
    "source": [
-    "# How to let your end users choose their model\n",
+    "# How to init any model in one line\n",
     "\n",
     "Many LLM applications let end users specify what model provider and model they want the application to be powered by. This requires writing some logic to initialize different ChatModels based on some user configuration. The `init_chat_model()` helper method makes it easy to initialize a number of different model integrations without having to worry about import paths and class names.\n",
     "\n",

docs/docs/how_to/index.mdx

@@ -79,7 +79,7 @@ These are the core building blocks you can use when building applications.
 - [How to: stream a response back](/docs/how_to/chat_streaming)
 - [How to: track token usage](/docs/how_to/chat_token_usage_tracking)
 - [How to: track response metadata across providers](/docs/how_to/response_metadata)
-- [How to: let your end users choose their model](/docs/how_to/chat_models_universal_init/)
+- [How to: init any model in one line](/docs/how_to/chat_models_universal_init/)
 
 ### LLMs