ZOOKEEPER-2944: Specify correct overflow value

When a sequence counter exceeds 2147483647, the next value is -2147483648.

Author: Chris Donati <chris.donati@appscale.com>

Reviewers: phunt@apache.org

Closes #421 from cdonati/ZOOKEEPER-2944

Change-Id: If9ef0705e533ea9bc91d6da0af1984d5c93d89e5

docs/zookeeperProgrammers.html

@@ -572,7 +572,7 @@ document.write("Last Published: " + document.lastModified);
         counter used to store the next sequence number is a signed int
         (4bytes) maintained by the parent node, the counter will
         overflow when incremented beyond 2147483647 (resulting in a
-        name "&lt;path&gt;-2147483647").</p>
+        name "&lt;path&gt;-2147483648").</p>
 <a name="Container+Nodes"></a>
 <h4>Container Nodes</h4>
 <p>

src/docs/src/documentation/content/xdocs/zookeeperProgrammers.xml

@@ -241,7 +241,7 @@
         counter used to store the next sequence number is a signed int
         (4bytes) maintained by the parent node, the counter will
         overflow when incremented beyond 2147483647 (resulting in a
-        name "&lt;path&gt;-2147483647").</para>
+        name "&lt;path&gt;-2147483648").</para>
       </section>
 
       <section>