update toc of prompt flow

Author: likebupt

articles/machine-learning/prompt-flow/how-to-custom-tool-package-creation-and-usage.md

@@ -14,6 +14,8 @@ ms.date: 09/12/2023
 
 # Custom tool package creation and usage (preview)
 
+When develop flows, you can not only use the built-in tools provided by Prompt Flow, but also develop your own custom tool and package it into a tool package. You can then upload your tool package to PyPI and share it with others.
+
 In this article, we'll guide you through the process of developing your own tool package, offering detailed steps and advice on how to utilize your creation.
 
 > [!IMPORTANT]

articles/machine-learning/toc.yml

@@ -622,6 +622,8 @@
               href: ./prompt-flow/how-to-customize-environment-runtime.md
             - name: Migrate from managed online endpoint/deployment runtime
               href: ./prompt-flow/migrate-managed-inference-runtime.md
+            - name: Network isolation in prompt flow
+              href: ./prompt-flow/how-to-secure-prompt-flow.md
         - name: Develop flows
           items:
             - name: Develop a standard flow
@@ -638,24 +640,22 @@
               href: ./prompt-flow/how-to-bulk-test-evaluate-flow.md
             - name: Develop a customized evaluation flow
               href: ./prompt-flow/how-to-develop-an-evaluation-flow.md
-        - name: Deploy flows for real-time inference
+        - name: Deploy a flow to online endpoint for real-time inference with UI
           href: ./prompt-flow/how-to-deploy-for-real-time-inference.md
-        - name: Go to production
+        - name: "Code first: Dev to Prod"
           items:
             - name: Community Ecosystem
               href: ./prompt-flow/community-ecosystem.md
-            - name: Custom tool package creation and usage
-              href: ./prompt-flow/how-to-custom-tool-package-creation-and-usage.md
+            - name: Integrate Prompt Flow with LLM-based application DevOps 
+              href: ./prompt-flow/how-to-integrate-with-llm-app-devops.md
             - name: Deploy a flow to online endpoint for real-time inference with CLI 
               href: ./prompt-flow/how-to-deploy-to-code.md
             - name: How to use streaming endpoints deployed from prompt flow
               href: ./prompt-flow/how-to-enable-streaming-mode.md
-            - name: Integrate Prompt Flow with LLM-based application DevOps 
-              href: ./prompt-flow/how-to-integrate-with-llm-app-devops.md
             - name: Set up end-to-end LLMOps with Prompt Flow and GitHub 
               href: ./prompt-flow/how-to-end-to-end-llmops-with-prompt-flow.md
-            - name: Network isolation in prompt flow
-              href: ./prompt-flow/how-to-secure-prompt-flow.md
+            - name: Custom tool package creation and usage
+              href: ./prompt-flow/how-to-custom-tool-package-creation-and-usage.md
         - name: Monitor generative AI applications in production
           href: ./prompt-flow/how-to-monitor-generative-ai-applications.md
         - name: Tools Reference