css: improve table display

- Use full reading col width for tables on large screens
- Use `display: block; overflow-x: scroll;` on small screens

Signed-off-by: David Karlsson <35727626+dvdksn@users.noreply.github.com>

assets/css/tables.css

@@ -1,5 +1,5 @@
 .prose table {
-  @apply block overflow-x-auto text-base;
+  @apply table w-full text-base sm:block overflow-x-auto;
   thead tr {
     @apply bg-gray-light-300 dark:bg-gray-dark-300
   }