Update branch alias for dev-main to 3.x-dev

Author: wilr

composer.json

@@ -22,7 +22,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-main": "2.x-dev"
+            "dev-main": "3.x-dev"
         },
         "expose": [
             "css"