skins: modarin256-thin.ini: fix typo.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

misc/skins/modarin256-thin.ini

@@ -175,7 +175,7 @@
     history-next-item-sign = »
     history-show-list-sign = ^
 
-[widget-scollbar]
+[widget-scrollbar]
     first-vert-char = ↑
     last-vert-char = ↓
     first-horiz-char = «