correct documentation for backup encryption key

config/gitlab.yml.example

@@ -959,9 +959,9 @@ production: &base
     #   # Turns on AWS Server-Side Encryption with Amazon S3-Managed Keys for backups, this is optional
     #   # encryption: 'AES256'
     #   # Turns on AWS Server-Side Encryption with Amazon Customer-Provided Encryption Keys for backups, this is optional
-    #   #   This should be set to the 256-bit, base64-encoded encryption key for Amazon S3 to use to encrypt or decrypt your data.
+    #   #   This should be set to the 256-bit encryption key for Amazon S3 to use to encrypt or decrypt your data.
     #   #   'encryption' must also be set in order for this to have any effect.
-    #   # encryption_key: '<base64 key>'
+    #   # encryption_key: '<key>'
     #   # Specifies Amazon S3 storage class to use for backups, this is optional
     #   # storage_class: 'STANDARD'
 

doc/raketasks/backup_restore.md

@@ -355,10 +355,10 @@ For installations from source:
          # Turns on AWS Server-Side Encryption with Amazon S3-Managed Keys for backups, this is optional
          # encryption: 'AES256'
          # Turns on AWS Server-Side Encryption with Amazon Customer-Provided Encryption Keys for backups, this is optional
-         #   This should be set to the base64-encoded encryption key for Amazon S3 to use to encrypt or decrypt your data.
+         #   This should be set to the encryption key for Amazon S3 to use to encrypt or decrypt your data.
          #   'encryption' must also be set in order for this to have any effect.
          #   To avoid storing the key on disk, the key can also be specified via the `GITLAB_BACKUP_ENCRYPTION_KEY` environment variable.
-         # encryption_key: '<base64 key>'
+         # encryption_key: '<key>'
          # Specifies Amazon S3 storage class to use for backups, this is optional
          # storage_class: 'STANDARD'
    ```