change text and spec

spec/features/user_creates_task_request_spec.rb

@@ -20,7 +20,7 @@ RSpec.feature 'User creates task request', type: :feature do
 
     click_on 'Create Task request'
 
-    expect(page).to have_content('Task request created succussfully.')
+    expect(page).to have_content task_created_message
   end
 
   scenario 'user can view task request details' do
@@ -85,4 +85,8 @@ RSpec.feature 'User creates task request', type: :feature do
   def additional_notes_field
     t "task_requests.form.labels.additional_notes"
   end
+
+  def task_created_message
+    t 'task_requests.create.success_message'
+  end
 end