0.94 has the security improvements to postMessage

wiki/src/install/inc/steps/download_2.inline.html

 <div id="activate-tails-verification"></div> <!-- Needed to activate the verification extension -->
-<div id="extension-version">0.93</div> <!-- Minimum version of the extension -->
+<div id="extension-version">0.94</div> <!-- Minimum version of the extension -->
 
 <div class="row">