Merge pull request #548 from lucasgdb/style/new-tool

style: add new tool

Author: lucasgdb

productivity-apps.md

@@ -4,3 +4,4 @@
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 [Notion](https://www.notion.so/) | It's an all-in-one productivity solution. Notion takes notes, track your progress, create a mood board for art, and organize project details, a workout calendar, a database, and so much more.
 [Pieces](https://pieces.app/) | Pieces is an intelligent, interactive, and indispensable hub for small developer materials and essential workflow context. Stay ahead with our cutting-edge code snippet platform and groundbreaking Workflow Copilot, integrated across your entire toolchain.
+[ChatGPT](https://chat.openai.com) | ChatGPT is fine-tuned from GPT-3.5, a language model trained to produce text. ChatGPT was optimized for dialogue by using Reinforcement Learning with Human Feedback (RLHF)