CSS property update: *-gap

[estelle]

This PR includes a the update of three existing reference pages

• gap
• row-gap
• column-gap

Part of openwebdocs/project#238

[github-actions]

Preview URLs (3 pages)

• /en-US/docs/Web/CSS/Reference/Properties/column-gap
• /en-US/docs/Web/CSS/Reference/Properties/gap
• /en-US/docs/Web/CSS/Reference/Properties/row-gap

Flaws (6)

Found an unexpected or unresolvable flaw? Please report it here.

URL: /en-US/docs/Web/CSS/Reference/Properties/column-gap
Title: column-gap CSS property
Flaw count: 2

• macros:
  • Macro cssxref produces link /en-US/docs/Web/CSS/rule which doesn't resolve
  • Macro cssxref produces link /en-US/docs/Web/CSS/rule which doesn't resolve

---

URL: /en-US/docs/Web/CSS/Reference/Properties/gap
Title: gap CSS property
Flaw count: 2

• macros:
  • Macro cssxref produces link /en-US/docs/Web/CSS/rule which doesn't resolve
  • Macro cssxref produces link /en-US/docs/Web/CSS/rule which doesn't resolve

---

URL: /en-US/docs/Web/CSS/Reference/Properties/row-gap
Title: row-gap CSS property
Flaw count: 2

• macros:
  • Macro cssxref produces link /en-US/docs/Web/CSS/rule which doesn't resolve
  • Macro cssxref produces link /en-US/docs/Web/CSS/rule which doesn't resolve