Update README build badge link

Signed-off-by: Waleed Mortaja <waleedmortaja@protonmail.com>

README.md

@@ -3,7 +3,7 @@
 [rocketchat-url]: https://chat.hyperledger.org/channel/fabric
 [rocketchat-image]: https://open.rocket.chat/images/join-chat.svg
 
-[![Build Status](https://dev.azure.com/Hyperledger/Fabric/_apis/build/status/Merge?branchName=main)](https://dev.azure.com/Hyperledger/Fabric/_build/latest?definitionId=51&branchName=main)
+[![Build Status](https://dev.azure.com/Hyperledger/Fabric/_apis/build/status/Merge?branchName=release-2.2)](https://dev.azure.com/Hyperledger/Fabric/_build/latest?definitionId=51&branchName=release-2.2)
 [![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/955/badge)](https://bestpractices.coreinfrastructure.org/projects/955)
 [![Go Report Card](https://goreportcard.com/badge/github.com/hyperledger/fabric)](https://goreportcard.com/report/github.com/hyperledger/fabric)
 [![GoDoc](https://godoc.org/github.com/hyperledger/fabric?status.svg)](https://godoc.org/github.com/hyperledger/fabric)