Bug 1610120 - Update SeaMonkey website for 2.53.1 Final release - fix txt filenames. r=me

src/releases/index.en.html

@@ -101,8 +101,8 @@
 
 <h3 id="official">Official builds</h3>
 <div class="section">
-<p class="note"><a href="[% INCLUDE download_file path='MD5SUMS' %]">MD5
-  sums</a> and <a href="[% INCLUDE download_file path='SHA1SUMS' %]">SHA1
+<p class="note"><a href="[% INCLUDE download_file path='MD5SUMS.txt' %]">MD5
+  sums</a> and <a href="[% INCLUDE download_file path='SHA1SUMS.txt' %]">SHA1
   sums</a> are available for official packages and source tarballs.
 </p>
 
@@ -144,7 +144,7 @@
       subdirectory itself, so create a directory to unpack it in.
     </li>
 
-    <li id="readme">The <a href="[% INCLUDE download_file path='README' %]">README</a>
+    <li id="readme">The <a href="[% INCLUDE download_file path='README.txt' %]">README</a>
       file explains how to pull SeaMonkey [% prettyversion %] from the source repository.
     </li>
   </ul>