[Area 1] Fix typo (#18017)

Author: Maddy-Cloudflare

src/content/docs/email-security/deployment/api/setup/gsuite-bcc-setup/add-domain.mdx

@@ -20,7 +20,7 @@ To set up Email Security (formerly Area 1) for Gmail:
   - **Domain**: Enter the domain you want to set up BCC from Google.
   - **Configured As**: Select Hops, enter `2`.
   - **Forwarding To**: Enter `google.com`.
-  - **Outbound TLS**: Select Forward all messages over TLS.
+  - **Outbound TLS**: Select **Forward all messages over TLS**.
   - **Quarantine policy**: Ensure no policy is selected.
 5. Select **Publish Domain**.