Updated config setting for user agent

Author: technige

neo4j/v1/connection.py

@@ -220,7 +220,7 @@ def __init__(self, sock, **config):
         self.responses = deque()
 
         # Determine the user agent and ensure it is a Unicode value
-        user_agent = config.get("user-agent", DEFAULT_USER_AGENT)
+        user_agent = config.get("user_agent", DEFAULT_USER_AGENT)
         if isinstance(user_agent, bytes):
             user_agent = user_agent.decode("UTF-8")