Update mfa_totp.php (openemr#6916)

* Update mfa_totp.php

On the original version, if you typed your password and pressed <ENTER>, a blank screen would be displayed.  This is because the <Form onsubmit=""> tag had one action, and the submit <Button> had a different onclick="" action.  This change makes it so pressing <ENTER> or clicking the Submit <Button> execute the same code...

* Update mfa_totp.php

Put type="submit" in \<button\>

interface/usergroup/mfa_totp.php

@@ -96,7 +96,7 @@ function docancel() {
  <?php
  } ?> <div class="row">
  <div class="col-sm-12">
- <form method='post' class="form-horizontal" action='mfa_totp.php' onsubmit='return top.restoreSession()'>
+ <form method='post' class="form-horizontal" action='mfa_totp.php' onsubmit="doregister('reg2')">
  <input type="hidden" name="csrf_token_form" value="<?php echo attr(CsrfUtils::collectCsrfToken()); ?>" />
 
 
@@ -126,7 +126,7 @@ function docancel() {
  </fieldset>
  <div class="form-group clearfix">
  <div class="col-sm-12 text-left position-override">
- <button type="button" class="btn btn-secondary btn-save" value="<?php echo xla('Submit'); ?>" onclick="doregister('reg2')"><?php echo xlt('Submit'); ?></button>
+ <button type="submit" class="btn btn-secondary btn-save" value="<?php echo xla('Submit'); ?>"><?php echo xlt('Submit'); ?></button>
  <button type="button" class="btn btn-link btn-cancel" value="<?php echo xla('Cancel'); ?>" onclick="docancel()" ><?php echo xlt('Cancel'); ?></button>
  </div>
  </div>