Update readme.md

Fixed unresolved import from 'duplipy.sentiment', which does not exist.

Author: Infinitode

readme.md

@@ -85,7 +85,7 @@ print(augmented_file_text)
 ### Sentiment Analysis
 
 ```python
-from duplipy.sentiment import analyze_sentiment
+from duplipy.text_analysis import analyze_sentiment
 
 text = "I love this product! It's amazing!"