Rephrase

We now have a trophy for installing and another one for starting.

wiki/src/install/inc/steps/create_persistence.inline.mdwn

@@ -2,7 +2,7 @@
 
 <div class="state-image">[[!img install/inc/infography/tails-usb.png link="no" alt="Tails USB stick"]]</div>
 
-<p>Yay, you are done installing Tails!</p>
+<p>Yay, you managed to start Tails on your computer!</p>
 
 <p>If you want to save some of your documents
 and configuration in an encrypted storage on the <span class="usb">final</span><span class="clone">new</span> Tails USB stick, follow