Complete sample code - add atrribute required (#995)

Hi, the sample code of rendered html by default form renderer doesn't match the reality of how the renderer actually renders the html. So I propose to add the attribute required of input element.

Author: mildabre

forms/cs/rendering.texy

@@ -320,13 +320,13 @@ Pokud nenastavíme vlastní renderer, bude použit výchozí vykreslovač [api:N
 <tr class="required">
 	<th><label class="required" for="frm-name">Jméno:</label></th>
 
-	<td><input type="text" class="text" name="name" id="frm-name" value=""></td>
+	<td><input type="text" class="text" name="name" id="frm-name" required value=""></td>
 </tr>
 
 <tr class="required">
 	<th><label class="required" for="frm-age">Věk:</label></th>
 
-	<td><input type="text" class="text" name="age" id="frm-age" value=""></td>
+	<td><input type="text" class="text" name="age" id="frm-age" required value=""></td>
 </tr>
 
 <tr>
@@ -356,12 +356,12 @@ Výsledkem je tento HTML kód:
 <dl>
 	<dt><label class="required" for="frm-name">Jméno:</label></dt>
 
-	<dd><input type="text" class="text" name="name" id="frm-name" value=""></dd>
+	<dd><input type="text" class="text" name="name" id="frm-name" required value=""></dd>
 
 
 	<dt><label class="required" for="frm-age">Věk:</label></dt>
 
-	<dd><input type="text" class="text" name="age" id="frm-age" value=""></dd>
+	<dd><input type="text" class="text" name="age" id="frm-age" required value=""></dd>
 
 
 	<dt><label>Pohlaví:</label></dt>