api.main: fix pycodestyle error for /metrics endpoint
#242
| Job | Run time |
|---|---|
| 6s | |
| 1m 56s | |
| 2m 3s | |
| 4m 5s |
/metrics endpoint
#242
| Job | Run time |
|---|---|
| 6s | |
| 1m 56s | |
| 2m 3s | |
| 4m 5s |