Docs - link fixes

gpdb-doc/dita/admin_guide/expand/expand-nodes.xml

@@ -140,15 +140,7 @@ gpadmin --stdin'</codeblock></li>
       <p>Before initializing the system with the new segments, shut down the system with
           <codeph>gpstop</codeph> to prevent user activity from skewing performance test results.
         Then, repeat the performance tests using host files that include <i>all</i> hosts, existing
-        and new:</p>
-      <ul>
-        <li id="no158731">
-          <xref href="#topic19" type="topic" format="dita"/>
-        </li>
-        <li id="no160320">
-          <xref href="#topic20" type="topic" format="dita"/>
-        </li>
-      </ul>
+        and new.</p>
     </body>
   </topic>
 </topic>

gpdb-doc/dita/ref_guide/config_params/guc_config.ditamap

@@ -238,7 +238,7 @@
             <topicref href="guc-list.xml#optimizer_print_missing_stats"/>
             <topicref href="guc-list.xml#optimizer_print_optimization_stats"/>
             <topicref href="guc-list.xml#optimizer_sort_factor"/>
-            <topicref href="guc-list.xml#optimizer_use_gpdb_allocatorsr"/>
+            <topicref href="guc-list.xml#optimizer_use_gpdb_allocators"/>
             <topicref href="guc-list.xml#password_encryption"/>
             <topicref href="guc-list.xml#password_hash_algorithm"/>
             <topicref href="guc-list.xml#pljava_classpath"/>