Change development to testing

Signed-off-by: Jan Friesse <jfriesse@redhat.com>

index.html

@@ -68,7 +68,7 @@
             flatiron release <small>1.4.9</small>
           </a>
           <a href="http://build.clusterlabs.org/corosync/releases/corosync-2.99.0.tar.gz" class="button">
-            <small>Download latest developement</small>
+            <small>Download latest testing</small>
             camelback release <small>Corosync 3.0 - Alpha1</small>
           </a>