refactor(copy): use TODOs for Spanish entries

benefits/locale/es/LC_MESSAGES/django.po

@@ -182,15 +182,15 @@ msgstr "¿Qué es Littlepay?"
 
 msgid "enrollment.pages.index.modal.p[0]"
 msgstr ""
-"Littlepay, nuestro socio de pagos, es una plataforma de procesamiento de "
-"pagos segura e integral que nos permite conectar su beneficio de tránsito a "
-"la tarjeta sin contacto de su elección."
+"TODO: Our payment partner, Littlepay, is a secure, end-to-end payment "
+"processing platform that allows us to connect your transit benefit to the "
+"contactless card of your choice."
 
 msgid "enrollment.pages.index.modal.p[1]"
 msgstr ""
-"Para obtener más información sobre Littlepay, visite el <a href='https://"
-"littlepay.com' target=\"_blank\" rel=\"noopener noreferrer\">sitio web de "
-"Littlepay</a>."
+"TODO: For more information on Littlepay, please visit the <a href='https://"
+"littlepay.com' target=\"_blank\" rel=\"noopener noreferrer\">Littlepay "
+"website</a>"
 
 msgid "core.pages.help.questions"
 msgstr "¿Preguntas?"