User documentation: synchronize userguide from the userguide translator

Change-Id: I9b30ae27658a40b85c67a4c30aaea2b4bf9507f9

docs/userguide/pl/index.html

@@ -14,7 +14,7 @@
 	<meta http-equiv="content-type" content="text/html; charset=utf-8" />
 	<meta http-equiv="Content-Style-Type" content="text/css" />
 	<meta name="robots" content="all" />
-	<title>Spis treści</title>
+	<title>Indeks</title>
 	<meta name="viewport" content="width=device-width, initial-scale=1.0" />
 	<link rel="stylesheet" type="text/css" href="../Haiku-doc.css" />
 </head>
@@ -33,6 +33,7 @@
 <li><a href="../de/index.html">Deutsch</a></li>
 <li><a href="../en/index.html">English</a></li>
 <li><a href="../es/index.html">Español</a></li>
+<li><a href="../eo/index.html">Esperanto</a></li>
 <li><a href="../fr/index.html">Français</a></li>
 <li><a href="../fur/index.html">Furlan</a></li>
 <li><a href="../it/index.html">Italiano</a></li>
@@ -60,7 +61,7 @@
 <div>
 <div class="box-info">Tłumaczenie tej strony jest niekompletne. Nieukończone części wyświetlane są w języku angielskim.</div>
 
-<h1>Spis treści</h1>
+<h1>Indeks</h1>
 
 <p><a href="attributes.html">Attributes</a> and <a href="queries.html">Queries</a> are key features of Haiku. While attributes are useful on their own, to display additional information on a file, for a query on them, they need to be indexed. It puts them into a lookup table, which in turn makes queries lightning fast.<br />
 The index is part of the filesystem and is kept for every volume/partition separately.</p>