Clean up training manual metadata

- removes authors, that is not a convention and there may be legal
ramifications
- fixes typo in the doc history

backport:havana

Change-Id: I3081d00195797a8ceef82350ce425c74750a9c81

doc/training-guides/st-training-guides.xml

@@ -11,9 +11,6 @@
     <titleabbrev>OpenStack Training Guides</titleabbrev>
     <info>
         <copyright>
-            <year>2010</year>
-            <year>2011</year>
-            <year>2012</year>
             <year>2013</year>
             <holder>OpenStack Foundation</holder>
         </copyright>
@@ -69,7 +66,7 @@
                 <revdescription>
                     <itemizedlist spacing="compact">
                         <listitem>
-                            <para>first draft relasesd</para>
+                            <para>first draft released</para>
                         </listitem>
                     </itemizedlist>
                 </revdescription>
@@ -85,16 +82,6 @@
                 </revdescription>
             </revision>
         </revhistory>
-        <authorgroup>
-            <author><personname>Sean Roberts</personname></author>
-            <author><personname>Colin McNamara</personname></author>
-            <author><personname>Pranav Salunke</personname></author>
-            <author><personname>Keith Burns</personname></author>
-            <othercredit><personname>Shaun McCance</personname></othercredit>
-            <othercredit><personname>David Cramer</personname></othercredit>
-            <othercredit><personname>Tristan Goode</personname></othercredit>
-            <othercredit><orgname>Aptira</orgname></othercredit>
-        </authorgroup>
     </info>
     <!-- <xi:include href="under-contruction-notice.xml"/> -->
     <xi:include href="bk000-preface.xml"/>