Update test_session.py

Author: aclark4life

test/test_session.py

@@ -196,7 +196,7 @@ def test_implicit_sessions_checkout(self):
         lsid_set = set()
         listener = OvertCommandListener()
         client = self.rs_or_single_client(event_listeners=[listener], maxPoolSize=1)
-        # Retry up to 10 times because there is a known race condition that can cause 
+        # Retry up to 10 times because there is a known race condition that can cause
         # multiple sessions to be used: connection check in happens before session check in
         for _ in range(10):
             cursor = client.db.test.find({})