Update README.md

Author: edbordin

README.md

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 # FPGA-Toolchain
 
-[![Build Status](https://dev.azure.com/open-tool-forge/fpga-toolchain/_apis/build/status/open-tool-forge.fpga-toolchain?branchName=master)](https://dev.azure.com/open-tool-forge/fpga-toolchain/_build?definitionId=1&branchFilter=2)
+[![Build Status](https://dev.azure.com/open-tool-forge/fpga-toolchain/_apis/build/status/open-tool-forge.fpga-toolchain?branchName=main)](https://dev.azure.com/open-tool-forge/fpga-toolchain/_build/latest?definitionId=1&branchName=main)
 [![Discord](https://img.shields.io/discord/613131135903596547?logo=discord)](https://discord.gg/s9sMfyx)
 
 ## Introduction