Adding socialite widgets to the page produce html-code with errors

[N0rbert]

Steps to reproduce:

1. Have latest dokuwiki installed

2. Have latest dokuwiki-plugin-socialite installed

3. Add ~~socialite~~ tag to the page

4. Validate the page with https://validator.w3.org

5. Get error:

   Error: No p element in scope but a p end tag seen.
   From line 88, column 1; to line 88, column 4
   /li></ul>↩</p>↩↩↩↩

Why this happens and how to fix?
We need to change

<p>
	<ul class="socialite">
		<li class="icon"><a class="vk" target="_blank" href="...">Vk</a></li>
		<li class="icon"><a class="telegram" target="_blank" href="...">Telegram</a></li>
		<li class="icon"><a class="facebook" target="_blank" href="...">Facebook</a></li>
		<li class="icon"><a class="twitter" target="_blank" href="...">Twitter</a></li>
	</ul>
</p>

to

	<ul class="socialite">
		<li class="icon"><a class="vk" target="_blank" href="...">Vk</a></li>
		<li class="icon"><a class="telegram" target="_blank" href="...">Telegram</a></li>
		<li class="icon"><a class="facebook" target="_blank" href="...">Facebook</a></li>
		<li class="icon"><a class="twitter" target="_blank" href="...">Twitter</a></li>
	</ul>

On my local wiki I solved this by fixing <p> tags with patch below:

--- /tmp/dokuwiki-plugin-socialite/
+++ /var/www/dokuwiki/lib/plugins/socialite/syntax/button.php
@@ -93,13 +93,13 @@
             $display = $this->getConf('display') ;
         }
 
-        $renderer->doc .= '<ul class="socialite">';
+        $renderer->doc .= '</p><ul class="socialite">';
         foreach ($data['networks'] as $network) {
             if (in_array($network, $valid_networks)) {
                 $renderer->doc .= $this->socialite_button($display, $network);
             }
         }
-        $renderer->doc .= '</ul>';
+        $renderer->doc .= '</ul><p>';
 
         return true;
     }

Note: the validation problem is also exists on your demo page - check https://validator.w3.org/nu/?doc=https%3A%2F%2Fservidordebian.org%2Fen%2Fblog%2F2015%2F08_24_dokuwiki-plugin-socialite .