Add redirect

Author: Maddy-Cloudflare

public/__redirects

@@ -2314,6 +2314,7 @@
 /cloudflare-one/email-security/reference/domain-information/ /cloudflare-one/email-security/settings/domain-management/domain/ 301
 /cloudflare-one/email-security/settings/configure-text-add-ons/ /cloudflare-one/email-security/settings/detection-settings/configure-text-add-ons/ 301
 /cloudflare-one/email-security/settings/trusted-domains/ /cloudflare-one/email-security/settings/detection-settings/trusted-domains/ 301
+/cloudflare-one/email-security/monitoring/search-email/ /cloudflare-one/email-security/investigation/search-email/ 301
 
 # ============================================================================
 # DYNAMIC REDIRECTS