docs: fix grammar and vocabulary errors in vllm.ipynb and volcengine_maas.ipynb (#31439)

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Author: MichaelLi65535

docs/docs/integrations/chat/vllm.ipynb

@@ -20,7 +20,7 @@
         "vLLM can be deployed as a server that mimics the OpenAI API protocol. This allows vLLM to be used as a drop-in replacement for applications using OpenAI API. This server can be queried in the same format as OpenAI API.\n",
         "\n",
         "## Overview\n",
-        "This will help you get started with vLLM [chat models](/docs/concepts/chat_models), which leverage the `langchain-openai` package. For detailed documentation of all `ChatOpenAI` features and configurations head to the [API reference](https://python.langchain.com/api_reference/openai/chat_models/langchain_openai.chat_models.base.ChatOpenAI.html).\n",
+        "This will help you get started with vLLM [chat models](/docs/concepts/chat_models), which leverages the `langchain-openai` package. For detailed documentation of all `ChatOpenAI` features and configurations head to the [API reference](https://python.langchain.com/api_reference/openai/chat_models/langchain_openai.chat_models.base.ChatOpenAI.html).\n",
         "\n",
         "### Integration details\n",
         "\n",
@@ -29,7 +29,7 @@
         "| [ChatOpenAI](https://python.langchain.com/api_reference/openai/chat_models/langchain_openai.chat_models.base.ChatOpenAI.html) | [langchain_openai](https://python.langchain.com/api_reference/openai/) | ✅ | beta | ❌ | ![PyPI - Downloads](https://img.shields.io/pypi/dm/langchain_openai?style=flat-square&label=%20) | ![PyPI - Version](https://img.shields.io/pypi/v/langchain_openai?style=flat-square&label=%20) |\n",
         "\n",
         "### Model features\n",
-        "Specific model features-- such as tool calling, support for multi-modal inputs, support for token-level streaming, etc.-- will depend on the hosted model.\n",
+        "Specific model features, such as tool calling, support for multi-modal inputs, support for token-level streaming, etc., will depend on the hosted model.\n",
         "\n",
         "## Setup\n",
         "\n",

docs/docs/integrations/chat/volcengine_maas.ipynb

@@ -6,7 +6,7 @@
    "metadata": {},
    "source": [
     "---\n",
-    "sidebar_label: Volc Enging Maas\n",
+    "sidebar_label: Volc Engine Maas\n",
     "---"
    ]
   },