Missing to_h cast in repo discovery script

[howcanunot]

if write make dataset/repositories.csv with Total number of repositories to fetch from GitHub. > 30 and % 100 != 0 we get an exception:

cam/steps/discover-repos.rb:125:in `<main>': undefined method `values' for an instance of Array (NoMethodError)
lines = [found.first[1].keys.join(',')] + found.values.map { |m| m.values.join(',') }
Did you mean?  values_at

This happens because if we exit the loop before we have collected enough repositories, the script tries to slice hash - line with bug

i suppose we miss to_h cast

[howcanunot]

@yegor256 fyi
noticed it while I was working on #186
i will fix it

[yegor256]

fixed