Update docs/spec/v1/kustomizations.md

Co-authored-by: Matheus Pimenta <matheuscscp@gmail.com>
Signed-off-by: danhubern <227390930+danhubern@users.noreply.github.com>

Author: danhubern

docs/spec/v1/kustomizations.md

@@ -1264,7 +1264,7 @@ data:
   sops.vault-token: <BASE64>
 ```
 
-### Controlling the decryption behavior of resources
+#### Controlling the decryption behavior of resources
 
 To change the decryption behaviour for specific Kubernetes resources, you can annotate them with: