added flash notification

app/controllers/registrar/domains_controller.rb

@@ -132,6 +132,7 @@ class Registrar
       @data = @domain.delete(params[:domain])
       @results = @data.css('result')
       if response_ok?
+        flash[:notice] = t('.deleting_request')
         redirect_to info_registrar_domains_url(domain_name: params[:domain][:name])
       else
         params[:domain_name] = params[:domain][:name]

config/locales/registrar/domains.en.yml

@@ -16,6 +16,9 @@ en:
       info:
         transfer_btn: Transfer
 
+      destroy:
+        deleting_request: Domain deletion request was sent
+
       search_form:
         download_btn: Download CSV
         reset_btn: Reset