fix: cut-off button in WatchWebStructure_p.html

(by header css dd  hight/line-hight)

htroot/WatchWebStructure_p.html

@@ -106,9 +106,9 @@ To see a list of all APIs, please visit the <a href="http://www.yacy-websuche.de
     <dt>Pivot Dot</dt><dd>Color <input type="text" name="colordot0" id="colordot0" value="#[colordot0]#" size="6" maxlength="6" /></dd>
     <dt>Other Dot</dt><dd>Color <input type="text" name="colordota" id="colordota" value="#[colordota]#" size="6" maxlength="6" /></dd>
     <dt>Dot-end</dt><dd>Color <input type="text" name="colorlineend" id="colorlineend" value="#[colorlineend]#" size="6" maxlength="6" /></dd>
-    <dt>&nbsp;</dt>
-    <dd><input type="submit" value="change" /></dd>
-  </dl>
+    </dl>
+    <div align="center"><input type="submit" value="change" /></div>
+  
 </fieldset>
 </form>
 </div><br />