firmware: tweak working

src/opnsense/mvc/app/views/OPNsense/Core/firmware.volt

@@ -652,7 +652,7 @@ POSSIBILITY OF SUCH DAMAGE.
         </div>
 <?php endif ?>
         <div class="alert alert-info" role="alert" style="min-height: 65px;">
-            <button class='btn btn-primary pull-right' id="upgrade" style="display:none"><i id="upgrade_progress" class=""></i> {{ lang._('Upgrade now') }}</button>
+            <button class='btn btn-primary pull-right' id="upgrade" style="display:none"><i id="upgrade_progress" class=""></i> {{ lang._('Update now') }}</button>
             <button class='btn btn-primary pull-right' id="audit"><i id="audit_progress" class=""></i> {{ lang._('Audit now') }}</button>
             <button class='btn btn-default pull-right' id="checkupdate" style="margin-right: 8px;"><i id="checkupdate_progress" class=""></i> {{ lang._('Check for updates')}}</button>
             <div style="margin-top: 8px;" id="updatestatus">{{ lang._('Click to check for updates.')}}</div>