Update instructions without JavaScript

NoScript is not in the toolbar anymore and I don't know how to produce
the same behavior. People also disable JavaScript from about:config and
using NoScript wouldn't help in this case.

wiki/src/install/inc/steps/download.inline.html

@@ -65,10 +65,15 @@ were solved, and known issues that have already been identified.</p>
     </div>
     <div id="verification" class="indent block">
       <div class="no-js">
-        <p>You seem to have JavaScript disabled. To use the
-           verification in the browser,
-           please allow all this page:</p>
-        [[!img screenshots/allow_js.png link="no"]]
+        <p>You seem to have JavaScript disabled. To verify your download,
+           you can either:</p>
+        <ul>
+          <li>Enable JavaScript.</li>
+          <li>Compare manually the checksum of your download with [[the
+              list of checksum of our images|install/v2/Tails/amd64/stable/latest.json]].<br/>
+              See our documentation on [[calculation checksums using
+              GtkHash|doc/encryption_and_privacy/checksums]].</li>
+        </ul>
       </div>
       <div id="verify-button" class="block">
         <label class="button">