Add config format.number: for display sequential numbers in table rows

[k1LoW]

No description provided.

[codecov]

Codecov Report

Merging #312 (73cb686) into master (84b63c7) will increase coverage by 0.17%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #312      +/-   ##
==========================================
+ Coverage   66.78%   66.95%   +0.17%     
==========================================
  Files          26       26              
  Lines        4287     4319      +32     
==========================================
+ Hits         2863     2892      +29     
- Misses       1132     1134       +2     
- Partials      292      293       +1     

Impacted Files	Coverage Δ
config/config.go	50.64% <ø> (ø)
output/md/md.go	68.75% <100.00%> (+1.78%)	⬆️
datasource/datasource.go	40.14% <0.00%> (-2.12%)	⬇️

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