Merge branch 'enable-hljs' into 'master'

Enable highlight_js by default See merge request gitlab-org/gitlab!87423

Merge branch 'enable-hljs' into 'master'
ebb49446 · Vitaly Slobodin · ef04f7d5 · 4ed2c720 · ebb49446
--- a/config/feature_flags/development/highlight_js.yml
+++ b/config/feature_flags/development/highlight_js.yml
@@ -5,4 +5,4 @@ rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/346257
 milestone: '14.6'
 type: development
 group: group::source code
-default_enabled: false
+default_enabled: true