Update adjusting_table.rb

[tepperly]

Fix the initialization of DEFAULT_ADJ_TABLE.

I believe this resolves the issue I just submitted.

[tonytonyjan]

@tepperly hi

I appreciate you contribution :heart:

If it's not trouble for you, I hope you can add the file below and squash your commits into one, thanks a million :+1:

# spec/adjusting_table_spec.rb
require 'jaro_winkler'

describe JaroWinkler::DEFAULT_ADJ_TABLE do
  it 'should not be empty' do
    expect(JaroWinkler::DEFAULT_ADJ_TABLE).not_to be_empty
  end
end

ref #4

[tepperly]

This is the first time I've done a pull request via github, and I kind of messed it up. I'll fix and do a new pull request.