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fixed x2

Double "the" in the description, Important Info section.

only count the the last extension

fixed ~~

Typo in the description:

"contatining" -> "containing"

Not done in Python, description says "and" instead of "plus".

fixed

Go Translation kumited

If there is a tie, return a sorted list of all extensions.

at the very least mention that the extensions should be sorted alphabetically...
or even better... dump that and test against sets ._.

Fixed.

Please check the issue above.

JS random tests: expected [ Array(5) ] to deeply equal [ Array(5) ].

Ruby 3.0 should be enabled, read this to learn how to do it

Please organize the structure of test fixture as following (although it has been mentioned in the attached link, I'm repeated here again)

describe "<This message should describe the categories of test groups inside this block>" do
  it "<A short message describing this test group>" do
    expect(...).to eq(...) #Assertions
    #Or Test.assert_equals(user_response, reference_response)
  end
end

nice kata ,thanks