Minor style changes to home page and media kit page

[#41872203]

lms/static/sass/multicourse/_home.scss

@@ -350,7 +350,6 @@
         top: 5px;
         font-family: $sans-serif;
         font-size: 14px;
-        text-transform: uppercase;
         text-shadow: 0 1px rgba(255,255,255, 0.6);
 
         &:after {

lms/templates/index.html

@@ -121,7 +121,7 @@
     <section class="more-info">
       <header>
         <h2><span class="edx">edX</span> News &amp; Announcements</h2>
-        <a class="action action-mediakit" href="${reverse('media-kit')}"> edX Media Kit</a>
+        <a class="action action-mediakit" href="${reverse('media-kit')}"> edX MEDIA KIT</a>
       </header>
       <section class="news">
         <section class="blog-posts">

lms/templates/static_templates/media-kit.html

@@ -1,10 +1,10 @@
 <%namespace name='static' file='../static_content.html'/>
 <%inherit file="../main.html" />
 
-<%block name="title"><title>EdX Media Kit</title></%block>
+<%block name="title"><title>edX Media Kit</title></%block>
 
 <section class="mediakit">
-  <h1>EdX Media Kit</h1>
+  <h1>edX Media Kit</h1>
 
   <hr />