Thanks.  I wrote a little script to check for this and it found three instances of it, which I fixed.  Then FYI, for grins, I checked the core repos (as a few days ago) and found the following (excluding /tmp files):

../rspec-dev/repos/rspec-core/features/command_line/fail_fast.feature
../rspec-dev/repos/rspec-core/spec/rspec/core/command_line_spec_output.txt
../rspec-dev/repos/rspec-core/spec/rspec/core/resources/a_bar.rb
../rspec-dev/repos/rspec-core/spec/rspec/core/resources/a_foo.rb
../rspec-dev/repos/rspec-mocks/DEV-README.md
../rspec-dev/repos/rspec-mocks/features/argument_matchers/explicit.feature
../rspec-dev/repos/rspec-mocks/features/argument_matchers/general_matchers.feature
../rspec-dev/repos/rspec-mocks/features/argument_matchers/README.md
../rspec-dev/repos/rspec-mocks/features/argument_matchers/type_matchers.feature
../rspec-dev/repos/rspec-mocks/features/message_expectations/block_local_expectations.feature.pending