openai docs nit (#10656)

docs/extras/integrations/platforms/openai.mdx

@@ -24,6 +24,8 @@ pip install tiktoken
 
 ## LLM
 
+See a [usage example](/docs/integrations/llms/openai).
+
 ```python
 from langchain.llms import OpenAI
 ```
@@ -32,16 +34,31 @@ If you are using a model hosted on `Azure`, you should use different wrapper for
 ```python
 from langchain.llms import AzureOpenAI
 ```
-For a more detailed walkthrough of the `Azure` wrapper, see [this notebook](/docs/integrations/llms/azure_openai_example.html)
+For a more detailed walkthrough of the `Azure` wrapper, see [here](/docs/integrations/llms/azure_openai_example)
+
+
+## Chat model
+
+See a [usage example](/docs/integrations/chat_models/openai).
+
+```python
+from langchain.chat_models import ChatOpenAI
+```
 
+If you are using a model hosted on `Azure`, you should use different wrapper for that:
+```python
+from langchain.llms import AzureChatOpenAI
+```
+For a more detailed walkthrough of the `Azure` wrapper, see [here](/docs/integrations/chat_models/azure_openai)
 
 
 ## Text Embedding Model
 
+See a [usage example](/docs/integrations/text_embedding/openai)
+
 ```python
 from langchain.embeddings import OpenAIEmbeddings
 ```
-For a more detailed walkthrough of this, see [this notebook](/docs/integrations/text_embedding/openai.html)
 
 
 ## Tokenizer
@@ -54,15 +71,7 @@ You can also use it to count tokens when splitting documents with
 from langchain.text_splitter import CharacterTextSplitter
 CharacterTextSplitter.from_tiktoken_encoder(...)
 ```
-For a more detailed walkthrough of this, see [this notebook](/docs/modules/data_connection/document_transformers/text_splitters/tiktoken.html)
-
-## Chain
-
-See a [usage example](/docs/guides/safety/moderation).
-
-```python
-from langchain.chains import OpenAIModerationChain
-```
+For a more detailed walkthrough of this, see [this notebook](/docs/modules/data_connection/document_transformers/text_splitters/tiktoken)
 
 ## Document Loader
 
@@ -79,3 +88,12 @@ See a [usage example](/docs/integrations/retrievers/chatgpt-plugin).
 ```python
 from langchain.retrievers import ChatGPTPluginRetriever
 ```
+
+## Chain
+
+See a [usage example](/docs/guides/safety/moderation).
+
+```python
+from langchain.chains import OpenAIModerationChain
+```
+