change doc name and refine

docs/how-to-guides/develop-a-tool/create-and-use-tool-package.md

@@ -165,4 +165,4 @@ Alternatively, you can test your tool package using the script below to ensure t
 [Customize your tool icon](add-a-tool-icon.md)  
 [Add category and tags for tool](add-category-and-tags-for-tool.md)  
 [Use file path as tool input](use-file-path-as-tool-input.md)  
-[Create Custom LLM Tool](create-custom-llm-tool.md)  
+[Customize a LLM Tool](customize_a_llm_tool.md)  

docs/how-to-guides/develop-a-tool/create-custom-llm-tool.md → docs/how-to-guides/develop-a-tool/customize_a_llm_tool.md

@@ -1,7 +1,5 @@
-# Create Custom LLM Tool
-In this document, we will guide you through the process of developing a tool with `custom_llm` type which can connect to a customized large language model with prompt.
-
-A Custom LLM is a large language model fine-tuned by yourself. If you find it has good performance and is useful, then you can follow this guidance to make it a tool so that it can be shared with others to increase its impact.
+# Customize a LLM Tool
+In this document, we will guide you through the process of developing a customized tool with `custom_llm` type which is designed by users for interfacing with a large language model using prompts.
 
 ## Prerequisites
 - Please ensure that your [Prompt flow for VS Code](https://marketplace.visualstudio.com/items?itemName=prompt-flow.prompt-flow) is updated to version 1.2.0 or later.
@@ -10,8 +8,8 @@ A Custom LLM is a large language model fine-tuned by yourself. If you find it ha
 Here we use [an existing tool package](https://github.com/microsoft/promptflow/tree/main/examples/tools/tool-package-quickstart/my_tool_package) as an example. If you want to create your own tool, please refer to [create and use tool package](create-and-use-tool-package.md).  
 
 1. Develop the tool code as in [this example](https://github.com/microsoft/promptflow/blob/main/examples/tools/tool-package-quickstart/my_tool_package/tools/tool_with_custom_llm_type.py).
-- Add a `CustomConnection` input to the tool, which is used to authenticate and establish a connection to the customized large language model.
-- Add a `PromptTemplate` input to the tool, which serves as an argument to be passed into the customized large language model.
+- Add a `CustomConnection` input to the tool, which is used to authenticate and establish a connection to the large language model.
+- Add a `PromptTemplate` input to the tool, which serves as an argument to be passed into the large language model.
 
     ```python
     from jinja2 import Template

docs/how-to-guides/develop-a-tool/index.md

@@ -9,5 +9,5 @@ create-and-use-tool-package
 add-a-tool-icon
 add-category-and-tags-for-tool
 use-file-path-as-tool-input
-create-custom-llm-tool
+customize_a_llm_tool
 ```