Fixed bookmark card design regression

no refs.
- fixed border radius of bookmark cards
- fixed title/description/metadata spacings

ghost/admin/app/styles/spirit/_koenig.css

@@ -896,6 +896,7 @@
     box-sizing: border-box;
     border: 1px solid var(--whitegrey);
     background: var(--white);
+    border-radius: 5px;
 }
 
 .koenig-editor__editor .kg-bookmark-container {
@@ -930,7 +931,7 @@
     display: -webkit-box;
     font-size: 1.4rem;
     line-height: 1.5em;
-    margin-top: 10px;
+    margin-top: 3px;
     color: var(--middarkgrey);
     font-weight: 400;
     max-height: 44px;
@@ -952,6 +953,8 @@
     position: absolute;
     top: 0;
     left: 0;
+    border-top-right-radius: 4px;
+    border-bottom-right-radius: 4px;
 }
 
 .kg-bookmark-metadata {
@@ -960,7 +963,7 @@
     font-weight: 500;
     display: flex;
     align-items: center;
-    margin-top: 14px;
+    margin-top: 22px;
 }
 
 .kg-bookmark-icon {