Update README.md

Author: SilkePilon

Diff for: README.md

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 ## API
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+> **Note**
+> The request limit is 5 per minute.
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 Welcome to the YouDotCom Python library! Our library now features an easy-to-use public API that allows you to interact with YouChat. With this API, you can easily integrate YouChat into your own projects and applications, providing a convenient and user-friendly way for your users to access and utilize the capabilities of the chat bot.
 
 ~~To get started, you will first need to register for an API key on our website. This key will be required to authenticate each API request.~~