Update success stories

[razum2um]

I think, would be nice to update info on
https://www.ruby-lang.org/en/documentation/success-stories/

1. about DevOps tools like Chef & Puppet
2. reject Blue Sequence from Web Applications (moreover the current provided link
   http://www.bluefountain.com/casestudies/bfs-deliver-a-2nd-sequence-production-system-for-toyota/
   points to Django debug error page, ridiculous)
3. add to Web Applications: GitHub & Shopify (or link to top rails apps..)

[marocchino]

👍

[stomar]

@razum2um

Re 2) the Blue Sequence link has already been fixed, see 19458bd.

[h8nor]

This example in the page header produces an error in the compiler.

I love Ruby
NoMethodError: undefined method `love' for main

[razum2um]

@BopoH13 thanks for notice!, this is actually a bug of tryruby, code itself works. I submitted it there ruby/TryRuby#26

[stomar]

@BopoH13 Thanks for the hint, but please do not "hijack" issues for reporting unrelated problems.