[DOCUMENTATION] English: fix incorrect rendering

git-svn-id: http://framework.zend.com/svn/framework/standard/trunk@22183 44c647ce-9c0f-0410-b52a-842ac1e357ba

documentation/manual/en/module_specs/Zend_Validate-CreditCard.xml

@@ -197,7 +197,7 @@ $valid = new Zend_Validate_CreditCard(array(
         <table id="zend.validate.set.creditcard.institute.table">
             <title>Constants for credit card institutes</title>
 
-            <tgroup cols="5">
+            <tgroup cols="2">
                 <thead>
                     <row>
                         <entry>Institute</entry>