closes #2428

What this PR does

• Make a fix to the Enrollment Index page that shows up on the Agency Card, Veterans, Senior, Medicare flows (all but CalFresh).
• Remove the space that appears after the Littlepay link by not using the includes and using the a href link code directly, allowing the link code to be right next to the copy, which allows the HTML to be rendered w/o any extra whitespaces.
• The only drawback to this is that if there is ever a style change to modal-trigger, we need to make sure the change is made here too. I found this drawback to be acceptable, b/c I think most changes if any that happen to the modal-trigger will be done with CSS classes, and it wouldn't be hard to add the CSS classes in both places. I'm open to the alternatives considered though.

Alternatives considered

• Tried removing line breaks from the modal-trigger.html template, from the media-item template, but didn't fix the bug.
• I considered trying to add conditional code to the modal-trigger.html includes, something like If no_space=True, then render {% translate ", to enter your contactless card details." %} - but it felt a little over the top, doesn't scale if this ever happened on another page. Would this be preferred though? I can do that.