The official [RSpec documentation](https://relishapp.com/rspec/rspec-expectations/v/2-4/docs/custom-matchers/define-matcher#define-a-matcher-with-default-messages) outlines that the main block when defining custom matchers should be called `match`.
The documentation currently uses `matches` when giving an example of the custom `:have_attached_file` matcher, which leads to the error
NoMethodError:
undefined method `matches' for #<Class:#<RSpec::Matchers::DSL::Matcher:0x00007fc898c846d8>>
Updating to `match`
