clearer description of "synchronize" option

extension/ui/pages/help.html

@@ -437,8 +437,8 @@
 				<p>Form buttons</p>
 				<ul>
 					<li><span class="option">synchronize options</span>
-						<p>Check this option to synchronize your options with the account associated to
-							your browser session.</p>
+						<p>Check this option to synchronize your options and make them available in all instances of the
+							browser you are logged into, on different devices.</p>
 					</li>
 					<li><span class="option">Reset</span>
 						<p>Reset all options to their default values.</p>