Fixed misaligned bracket in test…no functional changes.

Tests/SessionDelegateTests.swift

@@ -422,7 +422,7 @@ class SessionDelegateTestCase: BaseTestCase {
         let headers = [
             "Authorization": "1234",
             "Custom-Header": "foobar",
-            ]
+        ]
 
         // NOTE: It appears that most headers are maintained during a redirect with the exception of the `Authorization`
         // header. It appears that Apple's strips the `Authorization` header from the redirected URL request. If you