update README

README.md

@@ -5,12 +5,17 @@ to upload a PDF and ask questions based on the extracted text using AI
 services. 
 
 ## Features
-- Upload a PDF file and extract its text content.\
-- Choose between OpenAI and Cohere AI for generating responses.\
+- Upload a PDF file and extract its text content.
+- Choose between OpenAI and Cohere AI for generating responses.
 - Ask questions based on the extracted text and receive answers formatted in GitHub-flavored markdown.
 
 
 Note: You will need to enter your own API key 
 to use the corresponding feature. 
 You can generate the OpenAI API key from OpenAI's platform 
-and the Cohere API key from Cohere's dashboard.
+and the Cohere API key from Cohere's dashboard.
+
+### Acknowledgements
+- OpenAI for providing the GPT-3.5 API.
+- Cohere for providing the Cohere AI API.
+- Mantine for the UI components.