fix references to chat completions (#1168)

Author: ccurme

src/oss/python/integrations/chat/index.mdx

@@ -34,7 +34,7 @@ mode: wide
 
 ## Chat Completions API
 
-Certain model providers offer endpoints that are compatible with OpenAI's (legacy) [Chat Completions API](https://platform.openai.com/docs/guides/completions). In such case, you can use [`ChatOpenAI`](/oss/integrations/chat/openai) with a custom `base_url` to connect to these endpoints.
+Certain model providers offer endpoints that are compatible with OpenAI's [Chat Completions API](https://platform.openai.com/docs/api-reference/chat). In such case, you can use [`ChatOpenAI`](/oss/integrations/chat/openai) with a custom `base_url` to connect to these endpoints.
 
 <Accordion title="Example: OpenRouter">
     To use OpenRouter, you will need to sign up for an account and obtain an [API key](https://openrouter.ai/docs/api-reference/authentication).

src/oss/python/integrations/chat/openai.mdx

@@ -13,9 +13,9 @@ You can find information about OpenAI's latest models, their costs, context wind
 </Tip>
 
 <Note>
-    **Chat Completions API compatiblity**
+    **Chat Completions API compatibility**
 
-    `ChatOpenAI` is fully compatible with OpenAI's (legacy) [Chat Completions API](https://platform.openai.com/docs/guides/completions). If you are looking to connect to other model providers that support the Chat Completions API, you can do so – see [instructions](/oss/integrations/chat#chat-completions-api).
+    `ChatOpenAI` is fully compatible with OpenAI's [Chat Completions API](https://platform.openai.com/docs/api-reference/chat). If you are looking to connect to other model providers that support the Chat Completions API, you can do so – see [instructions](/oss/integrations/chat#chat-completions-api).
 </Note>
 
 ## Overview