Correct title of drop-down list

wiki/src/upgrade/tails.mdwn

@@ -50,7 +50,7 @@ copied.</p>
 1. Choose <span class="guilabel">Use a downloaded Tails ISO
    image</span>.
 
-1. Use the <span class="guilabel">Target Device</span> drop-down list to
+1. Use the <span class="guilabel">Target USB stick</span> drop-down list to
    specify the intermediary USB stick.
 
 1. To start the installation, click on the <span class="button">Install Tails</span> button.