Update docs related to data checks

[moralejo]

No description provided.

[moralejo]

WIP!

[codecov]

Codecov Report

Attention: 9 lines in your changes are missing coverage. Please review.

Comparison is base (107f8ce) 74.22% compared to head (e05ffe5) 74.21%.
Report is 2 commits behind head on main.

Files	Patch %	Lines
lstchain/scripts/lstchain_tune_nsb.py	16.66%	5 Missing ⚠️
lstchain/image/modifier.py	83.33%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1207      +/-   ##
==========================================
- Coverage   74.22%   74.21%   -0.02%     
==========================================
  Files         130      130              
  Lines       13279    13302      +23     
==========================================
+ Hits         9857     9872      +15     
- Misses       3422     3430       +8     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[moralejo]

I had to make a minor change in the script lstchain_tune_nsb.py, while writing the documentation I noticed it was not working as expected.
Also, some changes in image/modifier.py to deal properly with files having issues with the monitoring table.

[moralejo]

@vuillaut: I modified a bit the way the creation of the configuration file for the NSB tuning is built in the Workflow description.