Apply suggestion from @Maddy-Cloudflare

Author: Maddy-Cloudflare

src/content/changelog/email-security-cf1/2025-09-23-invalid-submissions.mdx

@@ -18,7 +18,6 @@ To ensure all customer feedback is actionable, we have launched two new features
 ![EmailSec-Invalid-Submissions-Dashboard](~/assets/images/changelog/email-security/EmailSec-Invalid-Submissions-Dashboard.png)
 
 
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 Learn more about this feature on [invalid submissions](https://developers.cloudflare.com/cloudflare-one/email-security/email-monitoring/search-email/#invalid-submissions).
 
 This feature is available across these Email Security packages: