Update LTS release label on frontpage (#1843)

Author: He-Pin

_layouts/frontpage.html

@@ -68,7 +68,7 @@ <h2>{{page.headerSubtitle}}</h2>
                   Latest Release: {{ scala_next_release.version }}
                 </a>
                 <a href="/download/{{ scala_lts_release.version }}.html" class="button">
-                  LTS Release: {{ scala_lts_release.version }}
+                  Latest LTS Release: {{ scala_lts_release.version }}
                 </a>
               </div>
             </div>