Updating documentation to mention Spanish locale

docs/network/index.html

@@ -323,7 +323,7 @@ network.setOptions(options);
             <tr><td id="event_locales">locales</td>
                 <td>Object</td>
                 <td>defaultLocales</td>
-                <td>Locales object. By default only <code>'en'</code> and <code>'nl'</code> are supported. Take a look
+                <td>Locales object. By default only <code>'en'</code>, <code>'es'</code> and <code>'nl'</code> are supported. Take a look
                     at
                     the <a href="#locales" data-scroll=""
                            data-options="{ &quot;easing&quot;: &quot;easeInCubic&quot; }">locales
@@ -333,7 +333,7 @@ network.setOptions(options);
             <tr><td id="event_clickToUse">clickToUse</td>
                 <td>Boolean</td>
                 <td>false</td>
-                <td>Locales object. By default only <code>'en'</code> and <code>'nl'</code> are supported. Take a look
+                <td>Locales object. By default only <code>'en'</code>, <code>'es'</code> and <code>'nl'</code> are supported. Take a look
                     at
                     the <a href="#locales" data-scroll=""
                            data-options="{ &quot;easing&quot;: &quot;easeInCubic&quot; }">locales
@@ -1557,4 +1557,4 @@ var network = new vis.Network(container, data, options);
 <script src="../js/tipuesearch.config.js"></script>
 <script src="../js/tipuesearch.js"></script>
 <!-- controller -->
-<script src="../js/main.js"></script>
+<script src="../js/main.js"></script>