better example title and description

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@312023 c90b9560-bf6c-de11-be94-00142212c4b1

reference/json/functions/json-decode.xml

@@ -119,7 +119,12 @@ array(5) {
     </screen>
    </example>
    <example>
-    <title>Another example</title>
+    <title>Accessing invalid object properties</title>
+    <simpara>
+     Accessing elements within an object that contain characters not
+     permitted under PHP's naming convention (e.g. the hyphen) can be
+     accomplished by encapsulating the element name within braces and the apostrophe.
+    </simpara>
     <programlisting role="php">
 <![CDATA[
 <?php