fix(media.css): highlight text helper class for grids and heros

src/includes/media/grid.liquid

@@ -6,7 +6,7 @@
     <a href="{{ item.grid.url }}" title="{{ alt }}">
       <div class="media-grid-item">
         {%- if item.grid.title or item.grid.subtext -%}
-        <div class="meta-text {{ item.type }}">
+        <div class="meta-text media-highlight {{ item.type }}">
             {% if item.grid.title %}
             <div class="header">{{ item.grid.title }}</div>
             {% endif %}

src/includes/media/watching/hero.liquid

@@ -1,6 +1,6 @@
 <a href="{{ movie.url }}">
   <div class="watching hero">
-    <div class="meta-text highlight-text">
+    <div class="meta-text media-highlight">
       <div class="header">{{ movie.title }}</div>
       <div class="subheader">
         {%- if movie.rating -%}