Improve grammar

wiki/src/doc/first_steps/persistence/configure.mdwn

@@ -42,7 +42,7 @@ deselecting one or several features.</p>
 <div class="note">
 
 <p>Only the features that are listed below can currently be made
-persistent. We are often asked to implement new features of the
+persistent. We are often asked to implement new features to the
 Persistent Storage:
 [[!tails_ticket 5501 desc="language and keyboard layout"]],
 [[!tails_ticket 5461 desc="Tor configuration"]],