[doc] Add description for Redis and Dbal to supported brokers.

Author: makasim

docs/client/supported_brokers.md

@@ -9,9 +9,11 @@ Here's the list of protocols and Client features supported by them
 | STOMP          |   No     |    No    |    Yes     |     No       |     Yes**   |
 | RabbitMQ STOMP |   Yes    |    Yes*  |    Yes     |     Yes***   |     Yes**   |
 | Filesystem     |   No     |    No    |    No      |     Yes      |     No      |
+| Redis          |   No     |    No    |    No      |  Not needed  |     No      |
+| Doctrine DBAL  |   Yes    |    Yes   |    No      |     Yes      |     No      |
 
 * \* Possible if a RabbitMQ delay plugin is installed.
 * \*\* Possible if topics (exchanges) are configured on broker side manually.
 * \*\*\* Possible if RabbitMQ Managment Plugin is installed.
 
-[back to index](../index.md)
+[back to index](../index.md)