Adapt persistence configuration to Debian

wiki/src/install/expert/usb.mdwn

@@ -120,3 +120,5 @@ using the Tails signing key.
 [[!inline pages="install/inc/steps/switch.inline" raw="yes"]]
 
 [[!inline pages="install/inc/steps/restart_first_time.inline" raw="yes"]]
+
+[[!inline pages="install/inc/steps/create_persistence.inline" raw="yes"]]

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

@@ -4,7 +4,7 @@ Create an encrypted persistent storage (optional)
 <div class="step-image">[[!img inc/infography/create-persistence.png link="no"]]</div>
 
 You can optionally create an *encrypted persistent storage* in the
-remaining free space on the <span class="usb">second</span><span class="clone">new</span> Tails USB stick to store any of the
+remaining free space on the <span class="windows-usb linux-usb mac-usb">second</span><span class="clone">new</span> Tails USB stick to store any of the
 following:
 
   - Your personal files and working documents
@@ -98,7 +98,7 @@ Passphrase</span> text boxes. Click on the <span class="guilabel">Create</span>
 
    <div class="step-image">[[!img inc/infography/restart-on-final-tails-with-persistence.png link="no"]]</div>
 
-1. Shut down the computer and restart on the <span class="usb">final</span><span class="clone">new</span> Tails<span class="dvd"> USB stick</span>.
+1. Shut down the computer and restart on <span class="windows-usb linux-usb mac-usb">the final</span><span class="clone">the new</span> Tails<span class="dvd"> USB stick</span>.
 
 1. In *Tails Greeter*: