refine table markdown output

[unsleepy22]

currently extracting markdown from web pages does not return proper markdown for tables.
e.g., for page like https://www.formula1.com/en/latest/article/formula-1-qatar-airways-qatar-grand-prix-2024-timetable.2IVEFdWCCYlUGDNcfJo5pJ, current returned markdown is like:

FRIDAY 29th NOVEMBER | Local time | |
---|---|---|

Porsche Carrera Cup Middle East | Practice Session | 11:50 - 12:35 |

F1 Academy | First Practice Session | 13:00 - 13:40 |

FIA Formula 2 | Practice Session | 14:05 - 14:50 |

we would expect tables formatted like:

| FRIDAY 29th NOVEMBER | Local time | |
|---|---|---|
| Porsche Carrera Cup Middle East | Practice Session | 11:50 - 12:35 |
| F1 Academy | First Practice Session | 13:00 - 13:40 |
| FIA Formula 2 | Practice Session | 14:05 - 14:50 |
| Paddock Club | Paddock Club Track Tour | 15:00 - 15:50 |
...

which is more standard and compact.

[adbar]

@unsleepy22 Thanks for the PR, the tests pass now, I'll have a look.