fix(docs): update values.yaml change varification to verification_code (

#692)

helm/charts/kratos/values.yaml

@@ -182,7 +182,7 @@ kratos:
   #         However, this email address is not on our database of registered users and therefore the attempt has failed. If this was you, check if you signed up using a different address. If this was not you, please ignore this email.
   #       plainBody: |-
   #         Hi, you (or someone else) entered this email address when trying to recover access to an account.
-  #   verification:
+  #   verification_code:
   #     valid:
   #       subject: Please verify your email address
   #       body: |-