doc: add example to generate config age.secrets.*.file by secrets.nix
#594
| Job | Run time |
|---|---|
| 2m 41s | |
| 3m 45s | |
| 6m 26s |
age.secrets.*.file by secrets.nix
#594
| Job | Run time |
|---|---|
| 2m 41s | |
| 3m 45s | |
| 6m 26s |