Update app.py

app.py

@@ -56,7 +56,7 @@ user_story_template = """Given the project details with the following parameters
 **RFP details:**
 {rfp_details}
 
-As a business analyst, analyze the given RFP details to delineate epics for the project. Break down the epic into features and features into individual requirements, adhering to the agile software development INVEST principles. Subsequently, generate user stories based fo each requirement. Ensure each story follows the "As a, I want to, So that" format and strictly avoid combining stories together.
+As a business analyst, analyze the given RFP details to delineate epics for the project. Break down the epics into features and features into individual requirements, adhering to the agile software development INVEST principles. Subsequently, generate user stories for each requirement. Ensure each story follows the "As a, I want to, So that" format and strictly avoid combining stories together.
 
 **Examples**