fixup! Properly format a numbered list

Author: pirj

docs/modules/ROOT/pages/upgrade_to_version_2.adoc

@@ -71,13 +71,13 @@ https://github.com/rubocop-hq/rubocop/pull/8490[Learn more about this change].
 Due to significant API changes, custom cops may break.
 Here is the summary of the changes:
 
-1) The base class for cops is now `RuboCop::Cop::RSpec::Base` instead of `RuboCop::Cop::RSpec::Cop`.
+1. The base class for cops is now `RuboCop::Cop::RSpec::Base` instead of `RuboCop::Cop::RSpec::Cop`.
 
-2) `TopLevelDescribe` is replaced with a more generic `TopLevelGroup`.
+2. `TopLevelDescribe` is replaced with a more generic `TopLevelGroup`.
 
-3) `RuboCop::RSpec::Language` has been completely rewritten to support dynamic RSpec DSL aliases and negated matchers to fully support third-party libraries such as RSpec Rails, Pundit, Action Policy and many others.
+3. `RuboCop::RSpec::Language` has been completely rewritten to support dynamic RSpec DSL aliases and negated matchers to fully support third-party libraries such as RSpec Rails, Pundit, Action Policy and many others.
 
-4) RuboCop RSpec updated the dependency of RuboCop to 1.0+.
+4. RuboCop RSpec updated the dependency of RuboCop to 1.0+.
 
 Below are the necessary steps to update custom cops to work with `rubocop-rspec` version 2.x.