Fixed highlight

[mnocon]

Spotted when randomly browsing the doc.

[github-actions]

Preview of modified files

Preview of modified Markdown:

• docs/content_management/rich_text/create_custom_richtext_block.md

[github-actions]

Summary

Status	Count
🔍 Total	736679
🔗 Unique	14794
✅ Successful	6208
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	730463
❓ Unknown	0
🚫 Errors	8
⛔ Unsupported	0

Errors per input

Errors in site/release_notes/ibexa_dxp_v4.3/index.html

• [ERROR] file:///home/runner/work/documentation-developer/documentation-developer/repositories/userdoc-5.0/site/personalization/configure_models/index.html#trigger-model-build (at 14460:10) | Cannot find fragment

Errors in site/release_notes/ibexa_dxp_v4.6/index.html

• [ERROR] file:///home/runner/work/documentation-developer/documentation-developer/repositories/userdoc-4.6/site/personalization/filters/index.html#commerce-specific-filters (at 18611:39) | Cannot find fragment
• [ERROR] file:///home/runner/work/documentation-developer/documentation-developer/repositories/userdoc-4.6/site/personalization/recommendation_models/index.html#submodels (at 18607:175) | Cannot find fragment

Errors in site/resources/new_in_doc/index.html

• [ERROR] file:///home/runner/work/documentation-developer/documentation-developer/repositories/userdoc-4.6/site/content_management/block_reference/index.html#bestsellers-block (at 19447:14) | Cannot find fragment
• [ERROR] file:///home/runner/work/documentation-developer/documentation-developer/repositories/userdoc-4.6/site/personalization/recommendation_models/index.html#dynamic-attributes (at 18848:33) | Cannot find fragment
• [ERROR] file:///home/runner/work/documentation-developer/documentation-developer/repositories/userdoc-4.6/site/personalization/recommendation_models/index.html#submodels (at 19318:14) | Cannot find fragment
• [ERROR] file:///home/runner/work/documentation-developer/documentation-developer/repositories/userdoc-4.6/site/personalization/recommendation_models/index.html#time-slot-based-models (at 18855:33) | Cannot find fragment
• [ERROR] file:///home/runner/work/documentation-developer/documentation-developer/repositories/userdoc-4.6/site/personalization/triggers/index.html#trigger-types (at 19169:14) | Cannot find fragment

Full Github Actions output