Important information has been highlighted in the MultiInstanceConnecting.md

Author: dkasimovskiy

docs/MultiInstanceConnecting.md

@@ -5,9 +5,12 @@
 This section shows examples of how to connect to multiple [Cartridge](https://github.com/tarantool/cartridge) routers.  
 We recommend to use load balancer in production applications rather than leaving this task to the connector.
 
+> **Warning**<br>
 In the case of using **multiple instances** of `TarantoolClient` we strongly recommend to apply a **shuffle** function to the list of addresses.
 By default, `TarantoolClient` uses the [round-robin](https://en.wikipedia.org/wiki/Round-robin_scheduling) approach for selecting the next available connection to distribute the load between Tarantool servers.
 When several instances of `TarantoolClient` are used simultaneously, with the default connection selection strategy and without **shuffling** of the server addresses the first request from every instance will be sent to the same server.
+
+> **Note**<br>
 You do not have to worry about shuffling addresses if you are using a single `TarantoolClient` connected to multiple instances, or if you are using a custom connection selection strategy that takes into account the problem of simultaneous requests.
 
 ## Setting addresses manually