fixed for attribute value

extension/ui/pages/options.html

@@ -18,7 +18,7 @@
 			</div>
 			<h4>Filename</h4>
 			<div class="option">
-				<label for="contextMenuEnabledInput">append save date to the filename</label>
+				<label for="appendSaveDateInput">append save date to the filename</label>
 				<input type="checkbox" id="appendSaveDateInput">
 			</div>
 			<h4>Page content</h4>