Revert version number change in README.md

Author: kar-rahul-aws

README.md

@@ -25,8 +25,8 @@ attempting reconnections when they are unlikely to succeed.
 See memory requirements for this library
 [here](./docs/doxygen/include/size_table.md).
 
-**backoffAlgorithm v1.3.1
-[source code](https://github.com/FreeRTOS/backoffAlgorithm/tree/v1.3.1/source)
+**backoffAlgorithm v1.3.0
+[source code](https://github.com/FreeRTOS/backoffAlgorithm/tree/v1.3.0/source)
 is part of the
 [FreeRTOS 202210.00 LTS](https://github.com/FreeRTOS/FreeRTOS-LTS/tree/202210.00-LTS)
 release.**