add i18n

app/controllers/submissions_controller.rb

@@ -49,7 +49,7 @@ class SubmissionsController < ApplicationController
 
     Submissions.send_signature_requests(submissions)
 
-    redirect_to template_path(@template), notice: 'New recipients have been added'
+    redirect_to template_path(@template), notice: I18n.t('new_recipients_have_been_added')
   end
 
   def destroy
@@ -57,13 +57,13 @@ class SubmissionsController < ApplicationController
       if params[:permanently].present?
         @submission.destroy!
 
-        'Submission has been removed'
+        I18n.t('submission_has_been_deleted')
       else
         @submission.update!(archived_at: Time.current)
 
         SendSubmissionArchivedWebhookRequestJob.perform_async('submission_id' => @submission.id)
 
-        'Submission has been archived'
+        I18n.t('submission_has_been_archived')
       end
 
     redirect_back(fallback_location: template_path(@submission.template), notice:)