fix badge

Signed-off-by: Yoshua Wuyts <yoshuawuyts@gmail.com>

Author: yoshuawuyts

README.md

@@ -14,8 +14,8 @@
     alt="Crates.io version" />
   </a>
   <!-- Build Status -->
-  <a href="https://dev.azure.com/yoshuawuyts/rustasync/_build?definitionId=1">
-    <img src="https://img.shields.io/azure-devops/build/yoshuawuyts/rustasync/1/master.svg?style=flat-square"
+  <a href="https://dev.azure.com/yoshuawuyts/rustasync/_build?definitionId=2">
+    <img src="https://img.shields.io/azure-devops/build/yoshuawuyts/rustasync/2/master.svg?style=flat-square"
       alt="Build Status" />
   </a>
   <!-- Downloads -->