Update Admin Area's Runner Details Page UI

This change enables a new version of the Admin Area's Runner Details UI
to match GitLab design guidelines and become consistent with forms in
other areas of the GitLab UI.

The change in UI is done by setting the feature flag
"runner_detailed_view_vue_ui" to enabled by default.

Changelog: changed

config/feature_flags/development/runner_detailed_view_vue_ui.yml

@@ -5,4 +5,4 @@ rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/325737
 milestone: '13.11'
 type: development
 group: group::runner
-default_enabled: false
+default_enabled: true

doc/ci/runners/configure_runners.md

@@ -90,7 +90,7 @@ To protect or unprotect a runner:
 1. Check the **Protected** option.
 1. Click **Save changes**.
 
-![specific runners edit icon](img/protected_runners_check_box.png)
+![specific runners edit icon](img/protected_runners_check_box_v14_1.png)
 
 ### Forks