refs #23949 finc: corrects space in php long tag

themes/finc/templates/RecordTab/holdingsils/standard.phtml

 <!-- finc - recordtab - holdingsils - standard -->
+
 <?php /* This is a new file introduced in VF5 - it originated from the old holdingsils file, for history, check there, CK */ ?>
 <?php if (strlen($holding['barcode'] ?? '') > 0): ?>
   <?php
@@ -25,7 +26,7 @@
         <span class="text-muted"><?=$this->transEsc("status_unknown_message")?></span>
       <?php else: ?>
         <?php if ($holding['availability'] ?? false): ?>
-          <?php /* Begin Available Items (Holds) */ ?>
+         <?php /* Begin Available Items (Holds) */ ?>
            <span class="text-success"><?=$this->transEsc("Available")?><link property="availability" href="http://schema.org/InStock" /></span>
           <?php if ($holding['link'] ?? false): ?>
             <?php /* finc: add class .hidden-print CK */ ?>