Fix broken links on document toc

Fixes gh-2056

Author: kazuki43zoo

src/site/es/xdoc/sqlmap-xml.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-       Copyright 2009-2019 the original author or authors.
+       Copyright 2009-2021 the original author or authors.
 
        Licensed under the Apache License, Version 2.0 (the "License");
        you may not use this file except in compliance with the License.
@@ -205,7 +205,7 @@ ps.setInt(1,id);]]></source>
         </table>
       </subsection>
 
-      <subsection name="insert, update and delete">
+      <subsection name="insert, update and delete" id="insert_update_and_delete">
         <p>Los insert, update y delete statements son muy similares en su implementación:</p>
 
         <source><![CDATA[<insert

src/site/ja/xdoc/sqlmap-xml.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-       Copyright 2009-2019 the original author or authors.
+       Copyright 2009-2021 the original author or authors.
 
        Licensed under the Apache License, Version 2.0 (the "License");
        you may not use this file except in compliance with the License.
@@ -237,7 +237,7 @@ ps.setInt(1,id);]]></source>
         </table>
       </subsection>
 
-      <subsection name="insert, update and delete">
+      <subsection name="insert, update and delete" id="insert_update_and_delete">
         <p>
           データを変更するステートメントである insert, update, delete は、非常によく似た実装となっています。
         </p>

src/site/ko/xdoc/sqlmap-xml.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-       Copyright 2009-2019 the original author or authors.
+       Copyright 2009-2021 the original author or authors.
 
        Licensed under the Apache License, Version 2.0 (the "License");
        you may not use this file except in compliance with the License.
@@ -192,7 +192,7 @@ ps.setInt(1,id);]]></source>
         </table>
       </subsection>
 
-      <subsection name="insert, update and delete">
+      <subsection name="insert, update and delete" id="insert_update_and_delete">
         <p>데이터를 변경하는 구문인 insert, update, delete는 매우 간단하다.</p>
 
         <source><![CDATA[<insert

src/site/xdoc/sqlmap-xml.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-       Copyright 2009-2019 the original author or authors.
+       Copyright 2009-2021 the original author or authors.
 
        Licensed under the Apache License, Version 2.0 (the "License");
        you may not use this file except in compliance with the License.
@@ -249,7 +249,7 @@ ps.setInt(1,id);]]></source>
         </table>
       </subsection>
 
-      <subsection name="insert, update and delete">
+      <subsection name="insert, update and delete" id="insert_update_and_delete">
         <p>The data modification statements insert, update and delete are very similar in their implementation:
         </p>