Update docs/modules/ROOT/pages/upgrade_to_version_2.adoc

Co-authored-by: Benjamin Quorning <22333+bquorning@users.noreply.github.com>

docs/modules/ROOT/pages/upgrade_to_version_2.adoc

@@ -109,7 +109,7 @@ https://github.com/rubocop-hq/rubocop-rspec/pull/962[Example pull request].
 `TopLevelDescribe` was incomplete, had poor performance and did not distinguish between example groups and shared example groups.
 
 `TopLevelGroup` provides a similar interface, but instead of a single `on_top_level_describe` hook there are two, `on_top_level_example_group` and `on_top_level_group`.
-There's no need yet for `on_top_level_shared_group` for RuboCop core cops, but if your custom cop needs such a hook, please feel free to send a pull request.
+There’s no need yet for `on_top_level_shared_group` for RuboCop core cops, but if your custom cop needs such a hook, please feel free to send a pull request.
 
 Additionally, `single_top_level_describe?` is removed with no direct replacement.
 You may use `top_level_groups` query method instead, e.g. `top_level_groups.one?`.