Fix popover shadow

src-ui/src/app/components/split-merge/split-merge.component.html

@@ -8,7 +8,7 @@
   </div>
   <div class="btn-group ml-2">
     <button type="button" class="btn btn-sm btn-outline-primary"
-      [popoverTitle]="optionsTitle" [autoClose]="'outside'" [ngbPopover]="optionsPopoverBody" popoverclass="shadow" #optionsPopover="ngbPopover">
+      [popoverTitle]="optionsTitle" [autoClose]="'outside'" [ngbPopover]="optionsPopoverBody" popoverClass="shadow" #optionsPopover="ngbPopover">
       <svg width="1em" height="1em" viewBox="0 0 16 16" fill="currentColor">
         <use xlink:href="assets/bootstrap-icons.svg#gear" />
       </svg>&nbsp;<ng-container i18n>Options</ng-container>