Add refer link

src/gateway/plan-and-deploy/security/db-encryption.md

@@ -117,7 +117,7 @@ The Keyring can be restored by importing the exported keyring.
 
 A recommended method for recovering a keyring is to use the Recovery mode, you should set the `keyring_recovery_public_key`
 Kong configuration value to the public key of the recovery key pair.
-(You can also follow the Generate a Management RSA Key Pair guide to generate a keypair for this purpose.)
+(You can also follow the [Generate a Management RSA Key Pair guide](#generate-a-management-rsa-key-pair) to generate a keypair for this purpose.)
 
 The keyring material is then encrypted with the public RSA key defined via the `keyring_recovery_public_key`
 Kong configuration value in the database. You can use this recovery key to decrypt the Keyring material in the database.