Remove borders on Caption wrapper (#2742)

Author: viktorrenkema

packages/gitbook/src/components/DocumentView/Caption.tsx

@@ -34,16 +34,9 @@ export function Caption(
         wrapperStyle = [
             'relative',
             'overflow-hidden',
-            'rounded',
-            'straight-corners:rounded-none',
             'after:block',
             'after:absolute',
             'after:-inset-[0]',
-            'after:border-dark/2',
-            'after:border',
-            'after:rounded',
-            'straight-corners:after:rounded-none',
-            'dark:after:border-light/1',
             'dark:after:mix-blend-plus-lighter',
             'after:pointer-events-none',
             fit ? 'w-fit' : null,