Fix some rubocop offenses

[ydah]

spec/rubocop/cop/rspec/repeated_example_group_description_spec.rb:93:6: C: [Corrected] InternalAffairs/ExampleDescription: Description does not match use of expect_offense.
  it 'register offense for different example group with similar descriptions' do
     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
spec/rubocop/cop/rspec/repeated_example_group_description_spec.rb:93:81: C: Layout/LineLength: Line is too long. [81/80]
  it 'registers offense for different example group with similar descriptions' do
                                                                                ^
spec/rubocop/cop/rspec/repeated_example_group_description_spec.rb:201:6: C: [Corrected] InternalAffairs/ExampleDescription: Description does not match use of expect_offense.
  it 'register offense if same method used in docstring' do
     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

---

Before submitting the PR make sure the following are checked:

• Feature branch is up-to-date with master (if not - rebase it).
• Squashed related commits together.
• [-] Added tests.
• [-] Updated documentation.
• [-] Added an entry to the CHANGELOG.md if the new code introduces user-observable changes.
• The build (bundle exec rake) passes (be sure to run this locally, since it may produce updated documentation that you will need to commit).