Update the number of Working groups to 13 from 14.

Change-Id: I03dc657dc0c44bffaecb0b56dcc3687e8c4372cd
Signed-off-by: Christie Witt <christie.witt@eclipse-foundation.org>
diff --git a/content/en_index.php b/content/en_index.php
index 1509538..fd415cb 100644
--- a/content/en_index.php
+++ b/content/en_index.php
@@ -133,7 +133,7 @@
               <span class="featured-circle featured-circle-stats"><i data-feather="share-2" stroke-width="1"></i></span>
             </span>
             <span class="col-xs-12 featured-stats-text-container">
-              <span class="featured-stats-number">14</span><br>
+              <span class="featured-stats-number">13</span><br>
                Working Groups
             </span>
           </a>