updated help page

extension/ui/pages/help.html

@@ -74,8 +74,8 @@
 						The default save folder is the download folder configured in your browser, cf. about:preferences in Firefox and
 						chrome://settings in Chrome.
 					</li>
-					<li>You can use the shortcut Ctrl+Shift+Y to save current or selected tabs in Chrome. Go to
-						<a href="chrome://extensions/shortcuts">chrome://extensions/shortcuts</a> to change it.</li>
+					<li>You can use the shortcut Ctrl+Shift+Y to save the current tab or selected tabs. Go to
+						<a href="chrome://extensions/shortcuts">chrome://extensions/shortcuts</a> to change it in Chrome.</li>
 				</ul>
 			</li>
 			<li>