Fix minor grammar in domain verification message

app/views/admin/serverless/domains/_form.html.haml

@@ -36,7 +36,7 @@
             = clipboard_button(target: '#serverless_domain_verification', class: 'btn-default d-none d-sm-block')
         %p.form-text.text-muted
           - link_to_help = link_to(_('verify ownership'), help_page_path('user/project/pages/custom_domains_ssl_tls_certification/index.md', anchor: '4-verify-the-domains-ownership'))
-          = _("To %{link_to_help} of your domain, add the above key to a TXT record within to your DNS configuration.").html_safe % { link_to_help: link_to_help }
+          = _("To %{link_to_help} of your domain, add the above key to a TXT record within your DNS configuration.").html_safe % { link_to_help: link_to_help }
 
     - else
       .form-group

app/views/projects/pages_domains/_dns.html.haml

@@ -30,4 +30,4 @@
             = clipboard_button(target: '#domain_verification', class: 'btn-default d-none d-sm-block')
         %p.form-text.text-muted
           - link_to_help = link_to(_('verify ownership'), help_page_path('user/project/pages/custom_domains_ssl_tls_certification/index.md', anchor: '4-verify-the-domains-ownership'))
-          = _("To %{link_to_help} of your domain, add the above key to a TXT record within to your DNS configuration.").html_safe % { link_to_help: link_to_help }
+          = _("To %{link_to_help} of your domain, add the above key to a TXT record within your DNS configuration.").html_safe % { link_to_help: link_to_help }

locale/gitlab.pot

@@ -27771,7 +27771,7 @@ msgstr ""
 msgid "To"
 msgstr ""
 
-msgid "To %{link_to_help} of your domain, add the above key to a TXT record within to your DNS configuration."
+msgid "To %{link_to_help} of your domain, add the above key to a TXT record within your DNS configuration."
 msgstr ""
 
 msgid "To Do"