Update app.py

app.py

@@ -93,7 +93,8 @@ def md5_hash(path):
 ```
 '''
 
-example2='''Analyze the given old code and new code and generate a summary of the changes.
+example2='''You are a software engineer who is best in the world at summarizing code changes.
+Carefully analyze the given old code and new code and generate a summary of the changes.
 
 Old Code:
 ```
@@ -160,7 +161,7 @@ void processList() {
 ```
 '''
 
-example3='''Is the following code prone to CWE-117: Improper Output Neutralization for Logs
+example3='''Is the following code prone to CWE-117: Improper Output Neutralization for Logs. Respond only with YES or NO.
 ```
 from flask import Flask, request, jsonify
 import logging