[documentation] Improve the structure of matrix_free.md #1147
| Job | Run time |
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| 6m 47s | |
| 6m 59s | |
| 14m 5s | |
| 13m 50s | |
| 7m 28s | |
| 7m 23s | |
| 3s | |
| 2h 51m 20s |
| Job | Run time |
|---|---|
| 6m 29s | |
| 6m 1s | |
| 5m 42s | |
| 7m 23s | |
| 26m 16s | |
| 27m 36s | |
| 11m 24s | |
| 11m 20s | |
| 6m 17s | |
| 6m 17s | |
| 6m 47s | |
| 6m 59s | |
| 14m 5s | |
| 13m 50s | |
| 7m 28s | |
| 7m 23s | |
| 3s | |
| 2h 51m 20s |