diff --git a/docs/.vitepress/plugins/headers.ts b/docs/.vitepress/plugins/headers.ts
index cc46e4ef37..442dc605e1 100644
--- a/docs/.vitepress/plugins/headers.ts
+++ b/docs/.vitepress/plugins/headers.ts
@@ -19,6 +19,10 @@ export default (md: MarkdownRenderer): void => {
       shouldEscapeText: false,
       slugify,
     })
+    // remove space before <
+    env.headers.forEach((header) => {
+      header.title = header.title.replace(/\s+</g, '<')
+    })
     return render(tokens, options, env)
   }
 }