Composer: Update branch alias 'dev-master' == 'v1.1.x'

Author: PhrozenByte

composer.json

@@ -42,7 +42,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "1.0.x-dev"
+            "dev-master": "1.1.x-dev"
         }
     }
 }