[mirotalksfu] - update readme, fix typo

README.md

@@ -34,9 +34,10 @@
 -   Webcam Streaming up to 4K quality (Front - Rear for mobile).
 -   Echo cancellation and noise suppression that makes your audio crystal clear.
 -   Screen Sharing to present documents, slides, and more ...
--   File Sharing (with drag-and-drop), share any files to your participants in the room
+-   File Sharing (with drag-and-drop), share any files to your participants in the room.
 -   Take a snapshot from the video frame(screen/cam) to save it as an image on your device.
 -   Chat with Emoji Picker to show you feeling, private messages, Markdown support, possibility to Save the conversations, and many more.
+-   ChatGPT (openAI), designed to answer users' questions, provide relevant information, and connect them with relevant resources.
 -   Speech recognition, execute the app features simply with your voice.
 -   Advance collaborative whiteboard for the teachers.
 -   Select Microphone - Speaker and Video source.