Fix user creation issue

LeStorage/Services.swift

@@ -20,7 +20,7 @@ struct ServiceCall {
     var requiresToken: Bool
 }
 
-let createAccountCall: ServiceCall = ServiceCall(path: "users", method: .post, requiresToken: false)
+let createAccountCall: ServiceCall = ServiceCall(path: "users/", method: .post, requiresToken: false)
 let requestTokenCall: ServiceCall = ServiceCall(path: "token-auth/", method: .post, requiresToken: false)
 let logoutCall: ServiceCall = ServiceCall(path: "api-token-logout/", method: .post, requiresToken: true)
 let getUserCall: ServiceCall = ServiceCall(path: "user-by-token/", method: .get, requiresToken: true)