Minor syntax improvements

Author: DifferentialOrange

tarantool/connection_pool.py

@@ -210,7 +210,7 @@ def connect(self):
 
         self.update_ro_info()
 
-    def send_with_reload_on_ro_error(self, mode, method_name, *args, **kwargs):
+    def _send_with_reload_on_ro_error(self, mode, method_name, *args, **kwargs):
         conn = self.strategy.getnext(mode)
         method = getattr(Connection, method_name)