fixed typo

Author: fabpot

composer.json

@@ -16,7 +16,7 @@
         "doctrine/doctrine-cache-bundle": "^1.2",
         "doctrine/orm": "^2.5",
         "incenteev/composer-parameter-handler": "^2.0",
-        "sensio/distribution-bundle": "~4.0",
+        "sensio/distribution-bundle": "^5.0",
         "sensio/framework-extra-bundle": "^3.0.2",
         "symfony/monolog-bundle": "^3.0.2",
         "symfony/polyfill-apcu": "^1.0",