rubocop fixes

app/controllers/api/v1/stories_controller.rb

@@ -100,23 +100,23 @@ def story_params
 
       def add_tasks_to_story(story)
         (params[:story][:tasks] || []).each do |task|
-          story.tasks.create({
+          story.tasks.create(
             label: task[:label],
             assigned_to: task[:assigned_to],
             due_at: task[:due_at]
-          })
+          )
         end
       end
 
       def add_attachments_to_story(story)
         (params[:story][:attachments] || []).each do |file|
-          story.attachments.create({
+          story.attachments.create(
             owner_id: current_user.id,
             file_name: file[:file_name],
             file_size: file[:file_size],
             content_type: file[:content_type],
             file_path: file[:file_path]
-          })
+          )
         end
       end
     end

app/models/user.rb

@@ -12,7 +12,7 @@ class User < ActiveRecord::Base
   has_many :stories, foreign_key: "owner_id", class_name: "Story"
   has_many :tasks, foreign_key: "assigned_to"
   has_many :notifications, -> { order(created_at: :desc).includes(:story, :project, :team) }
-	
+
   has_and_belongs_to_many :projects, -> { order(name: :asc) }
 
   has_attached_file :avatar,