update the docs
diff --git a/docs/_example_4.html b/docs/_example_4.html
index fd36ac8..10c0c07 100644
--- a/docs/_example_4.html
+++ b/docs/_example_4.html
@@ -3,7 +3,7 @@
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
-<meta name="generator" content="Doxygen 1.8.18"/>
+<meta name="generator" content="Doxygen 1.9.1"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>TinyXML-2: Read attributes and text information.</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
@@ -22,7 +22,7 @@
<tr style="height: 56px;">
<td id="projectalign" style="padding-left: 0.5em;">
<div id="projectname">TinyXML-2
-  <span id="projectnumber">8.0.0</span>
+  <span id="projectnumber">8.1.0</span>
</div>
</td>
</tr>
@@ -30,10 +30,10 @@
</table>
</div>
<!-- end header part -->
-<!-- Generated by Doxygen 1.8.18 -->
+<!-- Generated by Doxygen 1.9.1 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
-var searchBox = new SearchBox("searchBox", "search",false,'Search');
+var searchBox = new SearchBox("searchBox", "search",false,'Search','.html');
/* @license-end */
</script>
<script type="text/javascript" src="menudata.js"></script>
@@ -77,20 +77,18 @@
<div class="line"> <span class="stringliteral">" <v>2</v>"</span></div>
<div class="line"> <span class="stringliteral">" </textApproach>"</span></div>
<div class="line"> <span class="stringliteral">"</information>"</span>;</div>
-</div><!-- fragment --><p>TinyXML-2 has accessors for both approaches.</p>
+</div><!-- fragment --><p> TinyXML-2 has accessors for both approaches.</p>
<p>When using an attribute, you navigate to the XMLElement with that attribute and use the QueryIntAttribute() group of methods. (Also QueryFloatAttribute(), etc.)</p>
<div class="fragment"><div class="line"> XMLElement* attributeApproachElement = doc.FirstChildElement()->FirstChildElement( <span class="stringliteral">"attributeApproach"</span> );</div>
<div class="line"> attributeApproachElement->QueryIntAttribute( <span class="stringliteral">"v"</span>, &v0 );</div>
-</div><!-- fragment --><p>When using the text approach, you need to navigate down one more step to the XMLElement that contains the text. Note the extra FirstChildElement( "v" ) in the code below. The value of the text can then be safely queried with the QueryIntText() group of methods. (Also QueryFloatText(), etc.)</p>
+</div><!-- fragment --><p> When using the text approach, you need to navigate down one more step to the XMLElement that contains the text. Note the extra FirstChildElement( "v" ) in the code below. The value of the text can then be safely queried with the QueryIntText() group of methods. (Also QueryFloatText(), etc.)</p>
<div class="fragment"><div class="line"> XMLElement* textApproachElement = doc.FirstChildElement()->FirstChildElement( <span class="stringliteral">"textApproach"</span> );</div>
<div class="line"> textApproachElement->FirstChildElement( <span class="stringliteral">"v"</span> )->QueryIntText( &v1 );</div>
-</div><!-- fragment --> </div></div><!-- contents -->
+</div><!-- fragment --></div></div><!-- contents -->
</div><!-- PageDoc -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
-Generated on Sat Jun 13 2020 19:01:40 for TinyXML-2 by  <a href="http://www.doxygen.org/index.html">
-<img class="footer" src="doxygen.png" alt="doxygen"/>
-</a> 1.8.18
+Generated on Sat May 15 2021 20:26:18 for TinyXML-2 by <a href="https://www.doxygen.org/index.html"><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.9.1
</small></address>
</body>
</html>