change kibela apply colors

src/client/styles/scss/theme/_apply-colors-kibela.scss

@@ -131,6 +131,8 @@ body.kibela {
   :not(.hljs) > code:not(.hljs) {
     color: $color-inline-code;
     background-color: $bgcolor-inline-code;
+    border: solid 1px $bordercolor-inline-code;
+    border-radius: 0.35em;
   }
 
   /* button */