Fixed composer.json syntax

Author: samdark

composer.json

@@ -17,7 +17,7 @@
         "php": ">=5.4.0",
         "yiisoft/yii2": "~2.0.14",
         "yiisoft/yii2-bootstrap": "~2.0.0",
-        "yiisoft/yii2-swiftmailer": "~2.1.0|~2.0.7"
+        "yiisoft/yii2-swiftmailer": "~2.0.0 || ~2.1.0"
     },
     "require-dev": {
         "yiisoft/yii2-debug": "~2.1.0",