Update README.md

README.md

@@ -21,7 +21,7 @@ Question: Where is the user flying from?
 Answer  : (empty)
 ```
 
-Note the "Yes. No. " prepended in the context. Those are to allow the model to answer intent-related questions (e.g. Is the user looking for a restaurant?).
+Note the "Yes. No. " prepended in the context. Those are to allow the model to answer intent-related questions (e.g. "Is the user looking for a restaurant?").
 
 Thus, by asking questions for each intent and slot in natural language, we can effectively construct an NLU hypothesis. For more details, please read the paper: [Language model is all you need: Natural language understanding as question answering](https://assets.amazon.science/33/ea/800419b24a09876601d8ab99bfb9/language-model-is-all-you-need-natural-language-understanding-as-question-answering.pdf).