fix: wdl run should join input paths correctly.
#1711
| Job | Run time |
|---|---|
| 6m 2s | |
| 13s | |
| 2m 5s | |
| 3m 1s | |
| 7m 57s | |
| 2m 28s | |
| 2m 49s | |
| 1m 14s | |
| 2m 33s | |
| 1m 0s | |
| 1m 30s | |
| 4m 36s | |
| 2m 19s | |
| 31s | |
| 2m 54s | |
| 6m 13s | |
| 47m 25s |