Fix background corners showing through Powered through GitBook badge (#3493)

Author: zenoachtig

packages/gitbook/src/components/TableOfContents/Trademark.tsx

@@ -40,6 +40,10 @@ export function Trademark(props: {
                 '[html.sidebar-filled.theme-muted_&]:bg-tint-base',
                 '[html.sidebar-filled.theme-bold.tint_&]:bg-tint-base',
 
+                'rounded-lg',
+                'straight-corners:rounded-none',
+                'circular-corners:rounded-2xl',
+
                 'before:hidden',
                 'lg:before:block',
                 'before:content-[""]',