Correct last screenshot caption of media-kit page.

[#159]

lms/templates/static_templates/media-kit.html

@@ -89,7 +89,7 @@
             <figure>
               <a rel="asset" class="action action-download" href="${static.url('images/press-kit/3.091x_high-res.png')}">
                 <img src="${static.url('images/press-kit/3.091x_x200.jpg')}"/>
-          <figcaption>Screenshot of 6.00x: Introduction to Computer Science and Programming.</figcaption>
+          <figcaption>Screenshot of 3.091x: Introduction to Solid State Chemistry.</figcaption>
                 <span class="note">Download (High Resolution Photo)</span>
               </a>
             </figure>
@@ -108,4 +108,4 @@
         return false;
       });
    </script>
-</%block>
\ No newline at end of file
+</%block>